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Finding the Fourth Proportional to 70,515.96, 97,316.46 and 38,684.92

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Solution

The fourth proportional to 70,515.96, 97,316.46 and 38,684.92 is: 53,387.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,515.96 : 97,316.46 = 38,684.92 : x
  2. Step 2: Convert to fraction form
    70,515.96/97,316.46 = 38,684.92/x
  3. Step 3: Cross multiply
    70,515.96x = 97,316.46 × 38,684.92
  4. Step 4: Simplify right side
    70,515.96x = 3,764,679,469.78
  5. Step 5: Solve for x
    x = 3,764,679,469.78/70,515.96
  6. Step 6: Final answer
    x = 53,387.62

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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.