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Finding the Fourth Proportional to 70,611, 97,439.76 and 38,773.68

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Solution

The fourth proportional to 70,611, 97,439.76 and 38,773.68 is: 53,505.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,611 : 97,439.76 = 38,773.68 : x
  2. Step 2: Convert to fraction form
    70,611/97,439.76 = 38,773.68/x
  3. Step 3: Cross multiply
    70,611x = 97,439.76 × 38,773.68
  4. Step 4: Simplify right side
    70,611x = 3,778,098,073.52
  5. Step 5: Solve for x
    x = 3,778,098,073.52/70,611
  6. Step 6: Final answer
    x = 53,505.80

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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.