Home / 78,571,230,767.84-117,856,846,018.74-18,879,893,032.88

Finding the Fourth Proportional to 78,571,230,767.84, 117,856,846,018.74 and 18,879,893,032.88

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Solution

The fourth proportional to 78,571,230,767.84, 117,856,846,018.74 and 18,879,893,032.88 is: 28,319,839,517.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,571,230,767.84 : 117,856,846,018.74 = 18,879,893,032.88 : x
  2. Step 2: Convert to fraction form
    78,571,230,767.84/117,856,846,018.74 = 18,879,893,032.88/x
  3. Step 3: Cross multiply
    78,571,230,767.84x = 117,856,846,018.74 × 18,879,893,032.88
  4. Step 4: Simplify right side
    78,571,230,767.84x = 2,225,124,646,026,184,491,008
  5. Step 5: Solve for x
    x = 2,225,124,646,026,184,491,008/78,571,230,767.84
  6. Step 6: Final answer
    x = 28,319,839,517.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.