Home / 81,445.14-122,169.33-53,543.16

Finding the Fourth Proportional to 81,445.14, 122,169.33 and 53,543.16

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Solution

The fourth proportional to 81,445.14, 122,169.33 and 53,543.16 is: 80,315.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,445.14 : 122,169.33 = 53,543.16 : x
  2. Step 2: Convert to fraction form
    81,445.14/122,169.33 = 53,543.16/x
  3. Step 3: Cross multiply
    81,445.14x = 122,169.33 × 53,543.16
  4. Step 4: Simplify right side
    81,445.14x = 6,541,331,983.28
  5. Step 5: Solve for x
    x = 6,541,331,983.28/81,445.14
  6. Step 6: Final answer
    x = 80,315.81

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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.