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Finding the Fourth Proportional to 63,718.80, 95,549.40 and 28,640.40

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Solution

The fourth proportional to 63,718.80, 95,549.40 and 28,640.40 is: 42,947.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,718.80 : 95,549.40 = 28,640.40 : x
  2. Step 2: Convert to fraction form
    63,718.80/95,549.40 = 28,640.40/x
  3. Step 3: Cross multiply
    63,718.80x = 95,549.40 × 28,640.40
  4. Step 4: Simplify right side
    63,718.80x = 2,736,573,035.76
  5. Step 5: Solve for x
    x = 2,736,573,035.76/63,718.80
  6. Step 6: Final answer
    x = 42,947.65

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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.