Home / 78,255.84-117,370.10-36,132.32

Finding the Fourth Proportional to 78,255.84, 117,370.10 and 36,132.32

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Solution

The fourth proportional to 78,255.84, 117,370.10 and 36,132.32 is: 54,192.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,255.84 : 117,370.10 = 36,132.32 : x
  2. Step 2: Convert to fraction form
    78,255.84/117,370.10 = 36,132.32/x
  3. Step 3: Cross multiply
    78,255.84x = 117,370.10 × 36,132.32
  4. Step 4: Simplify right side
    78,255.84x = 4,240,854,011.63
  5. Step 5: Solve for x
    x = 4,240,854,011.63/78,255.84
  6. Step 6: Final answer
    x = 54,192.17

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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.