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Finding the Fourth Proportional to 70,228.59, 96,916.40 and 38,397.42

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Solution

The fourth proportional to 70,228.59, 96,916.40 and 38,397.42 is: 52,988.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,228.59 : 96,916.40 = 38,397.42 : x
  2. Step 2: Convert to fraction form
    70,228.59/96,916.40 = 38,397.42/x
  3. Step 3: Cross multiply
    70,228.59x = 96,916.40 × 38,397.42
  4. Step 4: Simplify right side
    70,228.59x = 3,721,339,715.69
  5. Step 5: Solve for x
    x = 3,721,339,715.69/70,228.59
  6. Step 6: Final answer
    x = 52,988.96

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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.