Home / 83,275.05-124,580.61-72,310.89

Finding the Fourth Proportional to 83,275.05, 124,580.61 and 72,310.89

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Solution

The fourth proportional to 83,275.05, 124,580.61 and 72,310.89 is: 108,178.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,275.05 : 124,580.61 = 72,310.89 : x
  2. Step 2: Convert to fraction form
    83,275.05/124,580.61 = 72,310.89/x
  3. Step 3: Cross multiply
    83,275.05x = 124,580.61 × 72,310.89
  4. Step 4: Simplify right side
    83,275.05x = 9,008,534,785.84
  5. Step 5: Solve for x
    x = 9,008,534,785.84/83,275.05
  6. Step 6: Final answer
    x = 108,178.08

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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.