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Finding the Fourth Proportional to 63,149.78, 87,146.28 and 34,855.47

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Solution

The fourth proportional to 63,149.78, 87,146.28 and 34,855.47 is: 48,100.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,149.78 : 87,146.28 = 34,855.47 : x
  2. Step 2: Convert to fraction form
    63,149.78/87,146.28 = 34,855.47/x
  3. Step 3: Cross multiply
    63,149.78x = 87,146.28 × 34,855.47
  4. Step 4: Simplify right side
    63,149.78x = 3,037,524,548.15
  5. Step 5: Solve for x
    x = 3,037,524,548.15/63,149.78
  6. Step 6: Final answer
    x = 48,100.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.