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Finding the Fourth Proportional to 70,698, 97,565.52 and 38,869.20

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Solution

The fourth proportional to 70,698, 97,565.52 and 38,869.20 is: 53,640.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,698 : 97,565.52 = 38,869.20 : x
  2. Step 2: Convert to fraction form
    70,698/97,565.52 = 38,869.20/x
  3. Step 3: Cross multiply
    70,698x = 97,565.52 × 38,869.20
  4. Step 4: Simplify right side
    70,698x = 3,792,293,709.98
  5. Step 5: Solve for x
    x = 3,792,293,709.98/70,698
  6. Step 6: Final answer
    x = 53,640.75

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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.