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Finding the Fourth Proportional to 84,704.48, 127,068.43 and 28,560.65

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Solution

The fourth proportional to 84,704.48, 127,068.43 and 28,560.65 is: 42,844.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,704.48 : 127,068.43 = 28,560.65 : x
  2. Step 2: Convert to fraction form
    84,704.48/127,068.43 = 28,560.65/x
  3. Step 3: Cross multiply
    84,704.48x = 127,068.43 × 28,560.65
  4. Step 4: Simplify right side
    84,704.48x = 3,629,156,248.54
  5. Step 5: Solve for x
    x = 3,629,156,248.54/84,704.48
  6. Step 6: Final answer
    x = 42,844.92

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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.