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Finding the Fourth Proportional to 89,429.78, 123,406.89 and 53,601.86

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Solution

The fourth proportional to 89,429.78, 123,406.89 and 53,601.86 is: 73,966.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,429.78 : 123,406.89 = 53,601.86 : x
  2. Step 2: Convert to fraction form
    89,429.78/123,406.89 = 53,601.86/x
  3. Step 3: Cross multiply
    89,429.78x = 123,406.89 × 53,601.86
  4. Step 4: Simplify right side
    89,429.78x = 6,614,838,840.82
  5. Step 5: Solve for x
    x = 6,614,838,840.82/89,429.78
  6. Step 6: Final answer
    x = 73,966.85

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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.