Home / 78,064,328.52-107,728,774.07-43,257,018.95

Finding the Fourth Proportional to 78,064,328.52, 107,728,774.07 and 43,257,018.95

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Solution

The fourth proportional to 78,064,328.52, 107,728,774.07 and 43,257,018.95 is: 59,694,686.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,064,328.52 : 107,728,774.07 = 43,257,018.95 : x
  2. Step 2: Convert to fraction form
    78,064,328.52/107,728,774.07 = 43,257,018.95/x
  3. Step 3: Cross multiply
    78,064,328.52x = 107,728,774.07 × 43,257,018.95
  4. Step 4: Simplify right side
    78,064,328.52x = 4,660,025,621,420,401
  5. Step 5: Solve for x
    x = 4,660,025,621,420,401/78,064,328.52
  6. Step 6: Final answer
    x = 59,694,686.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.