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Finding the Fourth Proportional to 83,080.10, 124,620.15 and 60,772.70

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Solution

The fourth proportional to 83,080.10, 124,620.15 and 60,772.70 is: 91,159.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,080.10 : 124,620.15 = 60,772.70 : x
  2. Step 2: Convert to fraction form
    83,080.10/124,620.15 = 60,772.70/x
  3. Step 3: Cross multiply
    83,080.10x = 124,620.15 × 60,772.70
  4. Step 4: Simplify right side
    83,080.10x = 7,573,502,989.91
  5. Step 5: Solve for x
    x = 7,573,502,989.91/83,080.10
  6. Step 6: Final answer
    x = 91,159.05

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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.