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Finding the Fourth Proportional to 69,919.60, 96,489.24 and 38,088.40

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Solution

The fourth proportional to 69,919.60, 96,489.24 and 38,088.40 is: 52,562.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,919.60 : 96,489.24 = 38,088.40 : x
  2. Step 2: Convert to fraction form
    69,919.60/96,489.24 = 38,088.40/x
  3. Step 3: Cross multiply
    69,919.60x = 96,489.24 × 38,088.40
  4. Step 4: Simplify right side
    69,919.60x = 3,675,120,768.82
  5. Step 5: Solve for x
    x = 3,675,120,768.82/69,919.60
  6. Step 6: Final answer
    x = 52,562.10

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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.