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Finding the Fourth Proportional to 69,130.59, 103,691.01 and 39,455.43

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Solution

The fourth proportional to 69,130.59, 103,691.01 and 39,455.43 is: 59,180.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,130.59 : 103,691.01 = 39,455.43 : x
  2. Step 2: Convert to fraction form
    69,130.59/103,691.01 = 39,455.43/x
  3. Step 3: Cross multiply
    69,130.59x = 103,691.01 × 39,455.43
  4. Step 4: Simplify right side
    69,130.59x = 4,091,173,386.68
  5. Step 5: Solve for x
    x = 4,091,173,386.68/69,130.59
  6. Step 6: Final answer
    x = 59,180.36

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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.