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Finding the Fourth Proportional to 70,645.14, 97,491.51 and 38,815.38

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Solution

The fourth proportional to 70,645.14, 97,491.51 and 38,815.38 is: 53,565.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,645.14 : 97,491.51 = 38,815.38 : x
  2. Step 2: Convert to fraction form
    70,645.14/97,491.51 = 38,815.38/x
  3. Step 3: Cross multiply
    70,645.14x = 97,491.51 × 38,815.38
  4. Step 4: Simplify right side
    70,645.14x = 3,784,170,007.42
  5. Step 5: Solve for x
    x = 3,784,170,007.42/70,645.14
  6. Step 6: Final answer
    x = 53,565.89

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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.