Home / 285,047.20-427,595.28-74,685.16

Finding the Fourth Proportional to 285,047.20, 427,595.28 and 74,685.16

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Solution

The fourth proportional to 285,047.20, 427,595.28 and 74,685.16 is: 112,034.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,047.20 : 427,595.28 = 74,685.16 : x
  2. Step 2: Convert to fraction form
    285,047.20/427,595.28 = 74,685.16/x
  3. Step 3: Cross multiply
    285,047.20x = 427,595.28 × 74,685.16
  4. Step 4: Simplify right side
    285,047.20x = 31,935,021,902.04
  5. Step 5: Solve for x
    x = 31,935,021,902.04/285,047.20
  6. Step 6: Final answer
    x = 112,034.15

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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.