Home / 42,732.80-64,122.20-17,790.08

Finding the Fourth Proportional to 42,732.80, 64,122.20 and 17,790.08

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Solution

The fourth proportional to 42,732.80, 64,122.20 and 17,790.08 is: 26,694.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,732.80 : 64,122.20 = 17,790.08 : x
  2. Step 2: Convert to fraction form
    42,732.80/64,122.20 = 17,790.08/x
  3. Step 3: Cross multiply
    42,732.80x = 64,122.20 × 17,790.08
  4. Step 4: Simplify right side
    42,732.80x = 1,140,739,067.78
  5. Step 5: Solve for x
    x = 1,140,739,067.78/42,732.80
  6. Step 6: Final answer
    x = 26,694.70

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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.