Home / 82,717.68-113,862.28-72,088.88

Finding the Fourth Proportional to 82,717.68, 113,862.28 and 72,088.88

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Solution

The fourth proportional to 82,717.68, 113,862.28 and 72,088.88 is: 99,231.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,717.68 : 113,862.28 = 72,088.88 : x
  2. Step 2: Convert to fraction form
    82,717.68/113,862.28 = 72,088.88/x
  3. Step 3: Cross multiply
    82,717.68x = 113,862.28 × 72,088.88
  4. Step 4: Simplify right side
    82,717.68x = 8,208,204,239.45
  5. Step 5: Solve for x
    x = 8,208,204,239.45/82,717.68
  6. Step 6: Final answer
    x = 99,231.56

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1.5x scale

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.