Home / 83,380.14-115,082.40-53,158.50

Finding the Fourth Proportional to 83,380.14, 115,082.40 and 53,158.50

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Solution

The fourth proportional to 83,380.14, 115,082.40 and 53,158.50 is: 73,370.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,380.14 : 115,082.40 = 53,158.50 : x
  2. Step 2: Convert to fraction form
    83,380.14/115,082.40 = 53,158.50/x
  3. Step 3: Cross multiply
    83,380.14x = 115,082.40 × 53,158.50
  4. Step 4: Simplify right side
    83,380.14x = 6,117,607,760.40
  5. Step 5: Solve for x
    x = 6,117,607,760.40/83,380.14
  6. Step 6: Final answer
    x = 73,370.08

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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.