Home / 74,824.40-112,366.20-72,491.60

Finding the Fourth Proportional to 74,824.40, 112,366.20 and 72,491.60

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Solution

The fourth proportional to 74,824.40, 112,366.20 and 72,491.60 is: 108,862.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,824.40 : 112,366.20 = 72,491.60 : x
  2. Step 2: Convert to fraction form
    74,824.40/112,366.20 = 72,491.60/x
  3. Step 3: Cross multiply
    74,824.40x = 112,366.20 × 72,491.60
  4. Step 4: Simplify right side
    74,824.40x = 8,145,605,623.92
  5. Step 5: Solve for x
    x = 8,145,605,623.92/74,824.40
  6. Step 6: Final answer
    x = 108,862.96

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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.