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Finding the Fourth Proportional to 73,124.98, 109,686.51 and 17,721.46

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Solution

The fourth proportional to 73,124.98, 109,686.51 and 17,721.46 is: 26,581.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,124.98 : 109,686.51 = 17,721.46 : x
  2. Step 2: Convert to fraction form
    73,124.98/109,686.51 = 17,721.46/x
  3. Step 3: Cross multiply
    73,124.98x = 109,686.51 × 17,721.46
  4. Step 4: Simplify right side
    73,124.98x = 1,943,805,099.50
  5. Step 5: Solve for x
    x = 1,943,805,099.50/73,124.98
  6. Step 6: Final answer
    x = 26,581.96

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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.