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Finding the Fourth Proportional to 66,077.64, 99,156.78 and 28,630.44

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Solution

The fourth proportional to 66,077.64, 99,156.78 and 28,630.44 is: 42,963.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,077.64 : 99,156.78 = 28,630.44 : x
  2. Step 2: Convert to fraction form
    66,077.64/99,156.78 = 28,630.44/x
  3. Step 3: Cross multiply
    66,077.64x = 99,156.78 × 28,630.44
  4. Step 4: Simplify right side
    66,077.64x = 2,838,902,240.38
  5. Step 5: Solve for x
    x = 2,838,902,240.38/66,077.64
  6. Step 6: Final answer
    x = 42,963.13

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1.5x scale

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.