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Finding the Fourth Proportional to 89,609.52, 123,619.76 and 53,737.32

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Solution

The fourth proportional to 89,609.52, 123,619.76 and 53,737.32 is: 74,132.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,609.52 : 123,619.76 = 53,737.32 : x
  2. Step 2: Convert to fraction form
    89,609.52/123,619.76 = 53,737.32/x
  3. Step 3: Cross multiply
    89,609.52x = 123,619.76 × 53,737.32
  4. Step 4: Simplify right side
    89,609.52x = 6,642,994,601.44
  5. Step 5: Solve for x
    x = 6,642,994,601.44/89,609.52
  6. Step 6: Final answer
    x = 74,132.69

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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.