Home / 74,279.60-102,505.53-40,287.95

Finding the Fourth Proportional to 74,279.60, 102,505.53 and 40,287.95

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Solution

The fourth proportional to 74,279.60, 102,505.53 and 40,287.95 is: 55,597.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,279.60 : 102,505.53 = 40,287.95 : x
  2. Step 2: Convert to fraction form
    74,279.60/102,505.53 = 40,287.95/x
  3. Step 3: Cross multiply
    74,279.60x = 102,505.53 × 40,287.95
  4. Step 4: Simplify right side
    74,279.60x = 4,129,737,690.31
  5. Step 5: Solve for x
    x = 4,129,737,690.31/74,279.60
  6. Step 6: Final answer
    x = 55,597.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.