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Finding the Fourth Proportional to 43,139.92, 64,681.92 and 18,167.02

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Solution

The fourth proportional to 43,139.92, 64,681.92 and 18,167.02 is: 27,238.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,139.92 : 64,681.92 = 18,167.02 : x
  2. Step 2: Convert to fraction form
    43,139.92/64,681.92 = 18,167.02/x
  3. Step 3: Cross multiply
    43,139.92x = 64,681.92 × 18,167.02
  4. Step 4: Simplify right side
    43,139.92x = 1,175,077,734.28
  5. Step 5: Solve for x
    x = 1,175,077,734.28/43,139.92
  6. Step 6: Final answer
    x = 27,238.76

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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.