Home / 83,428.55-125,141.76-20,249.16

Finding the Fourth Proportional to 83,428.55, 125,141.76 and 20,249.16

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Solution

The fourth proportional to 83,428.55, 125,141.76 and 20,249.16 is: 30,373.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,428.55 : 125,141.76 = 20,249.16 : x
  2. Step 2: Convert to fraction form
    83,428.55/125,141.76 = 20,249.16/x
  3. Step 3: Cross multiply
    83,428.55x = 125,141.76 × 20,249.16
  4. Step 4: Simplify right side
    83,428.55x = 2,534,015,051.64
  5. Step 5: Solve for x
    x = 2,534,015,051.64/83,428.55
  6. Step 6: Final answer
    x = 30,373.48

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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.