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Finding the Fourth Proportional to 69,115.80, 103,479.30 and 62,117.40

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Solution

The fourth proportional to 69,115.80, 103,479.30 and 62,117.40 is: 93,001.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,115.80 : 103,479.30 = 62,117.40 : x
  2. Step 2: Convert to fraction form
    69,115.80/103,479.30 = 62,117.40/x
  3. Step 3: Cross multiply
    69,115.80x = 103,479.30 × 62,117.40
  4. Step 4: Simplify right side
    69,115.80x = 6,427,865,069.82
  5. Step 5: Solve for x
    x = 6,427,865,069.82/69,115.80
  6. Step 6: Final answer
    x = 93,001.38

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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.