Home / 285,049.20-427,598.28-74,687.16

Finding the Fourth Proportional to 285,049.20, 427,598.28 and 74,687.16

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Solution

The fourth proportional to 285,049.20, 427,598.28 and 74,687.16 is: 112,037.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,049.20 : 427,598.28 = 74,687.16 : x
  2. Step 2: Convert to fraction form
    285,049.20/427,598.28 = 74,687.16/x
  3. Step 3: Cross multiply
    285,049.20x = 427,598.28 × 74,687.16
  4. Step 4: Simplify right side
    285,049.20x = 31,936,101,154.08
  5. Step 5: Solve for x
    x = 31,936,101,154.08/285,049.20
  6. Step 6: Final answer
    x = 112,037.15

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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.