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Finding the Fourth Proportional to 99,682.76, 137,565.51 and 54,363.21

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Solution

The fourth proportional to 99,682.76, 137,565.51 and 54,363.21 is: 75,023.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,682.76 : 137,565.51 = 54,363.21 : x
  2. Step 2: Convert to fraction form
    99,682.76/137,565.51 = 54,363.21/x
  3. Step 3: Cross multiply
    99,682.76x = 137,565.51 × 54,363.21
  4. Step 4: Simplify right side
    99,682.76x = 7,478,502,708.89
  5. Step 5: Solve for x
    x = 7,478,502,708.89/99,682.76
  6. Step 6: Final answer
    x = 75,023.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.