Home / 74,597.28-111,705.84-72,381.12

Finding the Fourth Proportional to 74,597.28, 111,705.84 and 72,381.12

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Solution

The fourth proportional to 74,597.28, 111,705.84 and 72,381.12 is: 108,387.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,597.28 : 111,705.84 = 72,381.12 : x
  2. Step 2: Convert to fraction form
    74,597.28/111,705.84 = 72,381.12/x
  3. Step 3: Cross multiply
    74,597.28x = 111,705.84 × 72,381.12
  4. Step 4: Simplify right side
    74,597.28x = 8,085,393,809.74
  5. Step 5: Solve for x
    x = 8,085,393,809.74/74,597.28
  6. Step 6: Final answer
    x = 108,387.25

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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.