Home / 89,448.38-123,428.85-53,639.90

Finding the Fourth Proportional to 89,448.38, 123,428.85 and 53,639.90

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Solution

The fourth proportional to 89,448.38, 123,428.85 and 53,639.90 is: 74,017.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,448.38 : 123,428.85 = 53,639.90 : x
  2. Step 2: Convert to fraction form
    89,448.38/123,428.85 = 53,639.90/x
  3. Step 3: Cross multiply
    89,448.38x = 123,428.85 × 53,639.90
  4. Step 4: Simplify right side
    89,448.38x = 6,620,711,171.12
  5. Step 5: Solve for x
    x = 6,620,711,171.12/89,448.38
  6. Step 6: Final answer
    x = 74,017.12

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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.