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Finding the Fourth Proportional to 67,987.68, 101,800.08 and 39,884.64

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Solution

The fourth proportional to 67,987.68, 101,800.08 and 39,884.64 is: 59,720.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,987.68 : 101,800.08 = 39,884.64 : x
  2. Step 2: Convert to fraction form
    67,987.68/101,800.08 = 39,884.64/x
  3. Step 3: Cross multiply
    67,987.68x = 101,800.08 × 39,884.64
  4. Step 4: Simplify right side
    67,987.68x = 4,060,259,542.77
  5. Step 5: Solve for x
    x = 4,060,259,542.77/67,987.68
  6. Step 6: Final answer
    x = 59,720.52

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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.