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Finding the Fourth Proportional to 73,124.48, 109,685.76 and 17,720.96

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Solution

The fourth proportional to 73,124.48, 109,685.76 and 17,720.96 is: 26,581.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,124.48 : 109,685.76 = 17,720.96 : x
  2. Step 2: Convert to fraction form
    73,124.48/109,685.76 = 17,720.96/x
  3. Step 3: Cross multiply
    73,124.48x = 109,685.76 × 17,720.96
  4. Step 4: Simplify right side
    73,124.48x = 1,943,736,965.53
  5. Step 5: Solve for x
    x = 1,943,736,965.53/73,124.48
  6. Step 6: Final answer
    x = 26,581.21

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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.