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Finding the Fourth Proportional to 71,420.52, 107,025.20 and 67,426.52

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Solution

The fourth proportional to 71,420.52, 107,025.20 and 67,426.52 is: 101,040.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,420.52 : 107,025.20 = 67,426.52 : x
  2. Step 2: Convert to fraction form
    71,420.52/107,025.20 = 67,426.52/x
  3. Step 3: Cross multiply
    71,420.52x = 107,025.20 × 67,426.52
  4. Step 4: Simplify right side
    71,420.52x = 7,216,336,451.17
  5. Step 5: Solve for x
    x = 7,216,336,451.17/71,420.52
  6. Step 6: Final answer
    x = 101,040.10

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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.