Home / 83,320.81-115,036.38-74,352.89

Finding the Fourth Proportional to 83,320.81, 115,036.38 and 74,352.89

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Solution

The fourth proportional to 83,320.81, 115,036.38 and 74,352.89 is: 102,654.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,320.81 : 115,036.38 = 74,352.89 : x
  2. Step 2: Convert to fraction form
    83,320.81/115,036.38 = 74,352.89/x
  3. Step 3: Cross multiply
    83,320.81x = 115,036.38 × 74,352.89
  4. Step 4: Simplify right side
    83,320.81x = 8,553,287,595.73
  5. Step 5: Solve for x
    x = 8,553,287,595.73/83,320.81
  6. Step 6: Final answer
    x = 102,654.88

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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.