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Finding the Fourth Proportional to 69,117.78, 103,693.12 and 22,370.66

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Solution

The fourth proportional to 69,117.78, 103,693.12 and 22,370.66 is: 33,561.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,117.78 : 103,693.12 = 22,370.66 : x
  2. Step 2: Convert to fraction form
    69,117.78/103,693.12 = 22,370.66/x
  3. Step 3: Cross multiply
    69,117.78x = 103,693.12 × 22,370.66
  4. Step 4: Simplify right side
    69,117.78x = 2,319,683,531.86
  5. Step 5: Solve for x
    x = 2,319,683,531.86/69,117.78
  6. Step 6: Final answer
    x = 33,561.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.