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Finding the Fourth Proportional to 71,359.60, 106,924.20 and 45,017.20

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Solution

The fourth proportional to 71,359.60, 106,924.20 and 45,017.20 is: 67,453.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,359.60 : 106,924.20 = 45,017.20 : x
  2. Step 2: Convert to fraction form
    71,359.60/106,924.20 = 45,017.20/x
  3. Step 3: Cross multiply
    71,359.60x = 106,924.20 × 45,017.20
  4. Step 4: Simplify right side
    71,359.60x = 4,813,428,096.24
  5. Step 5: Solve for x
    x = 4,813,428,096.24/71,359.60
  6. Step 6: Final answer
    x = 67,453.13

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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.