Home / 74,474.40-111,711.60-71,248.80

Finding the Fourth Proportional to 74,474.40, 111,711.60 and 71,248.80

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Solution

The fourth proportional to 74,474.40, 111,711.60 and 71,248.80 is: 106,873.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,474.40 : 111,711.60 = 71,248.80 : x
  2. Step 2: Convert to fraction form
    74,474.40/111,711.60 = 71,248.80/x
  3. Step 3: Cross multiply
    74,474.40x = 111,711.60 × 71,248.80
  4. Step 4: Simplify right side
    74,474.40x = 7,959,317,446.08
  5. Step 5: Solve for x
    x = 7,959,317,446.08/74,474.40
  6. Step 6: Final answer
    x = 106,873.20

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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.