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Finding the Fourth Proportional to 83,001.79, 124,628.10 and 66,312.28

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Solution

The fourth proportional to 83,001.79, 124,628.10 and 66,312.28 is: 99,568.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,001.79 : 124,628.10 = 66,312.28 : x
  2. Step 2: Convert to fraction form
    83,001.79/124,628.10 = 66,312.28/x
  3. Step 3: Cross multiply
    83,001.79x = 124,628.10 × 66,312.28
  4. Step 4: Simplify right side
    83,001.79x = 8,264,373,463.07
  5. Step 5: Solve for x
    x = 8,264,373,463.07/83,001.79
  6. Step 6: Final answer
    x = 99,568.62

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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.