Home / 75,319.38-112,757.18-65,977.65

Finding the Fourth Proportional to 75,319.38, 112,757.18 and 65,977.65

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Solution

The fourth proportional to 75,319.38, 112,757.18 and 65,977.65 is: 98,772.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,319.38 : 112,757.18 = 65,977.65 : x
  2. Step 2: Convert to fraction form
    75,319.38/112,757.18 = 65,977.65/x
  3. Step 3: Cross multiply
    75,319.38x = 112,757.18 × 65,977.65
  4. Step 4: Simplify right side
    75,319.38x = 7,439,453,427.14
  5. Step 5: Solve for x
    x = 7,439,453,427.14/75,319.38
  6. Step 6: Final answer
    x = 98,772.10

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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.