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Finding the Fourth Proportional to 61,079.97, 91,615.61 and 18,959.03

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Solution

The fourth proportional to 61,079.97, 91,615.61 and 18,959.03 is: 28,437.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,079.97 : 91,615.61 = 18,959.03 : x
  2. Step 2: Convert to fraction form
    61,079.97/91,615.61 = 18,959.03/x
  3. Step 3: Cross multiply
    61,079.97x = 91,615.61 × 18,959.03
  4. Step 4: Simplify right side
    61,079.97x = 1,736,942,545.59
  5. Step 5: Solve for x
    x = 1,736,942,545.59/61,079.97
  6. Step 6: Final answer
    x = 28,437.19

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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.