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Finding the Fourth Proportional to 70,565.70, 97,380.54 and 38,734.86

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Solution

The fourth proportional to 70,565.70, 97,380.54 and 38,734.86 is: 53,454.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,565.70 : 97,380.54 = 38,734.86 : x
  2. Step 2: Convert to fraction form
    70,565.70/97,380.54 = 38,734.86/x
  3. Step 3: Cross multiply
    70,565.70x = 97,380.54 × 38,734.86
  4. Step 4: Simplify right side
    70,565.70x = 3,772,021,583.62
  5. Step 5: Solve for x
    x = 3,772,021,583.62/70,565.70
  6. Step 6: Final answer
    x = 53,454.04

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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.