Home / 85,384.24-127,759.16-53,645.70

Finding the Fourth Proportional to 85,384.24, 127,759.16 and 53,645.70

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Solution

The fourth proportional to 85,384.24, 127,759.16 and 53,645.70 is: 80,269.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,384.24 : 127,759.16 = 53,645.70 : x
  2. Step 2: Convert to fraction form
    85,384.24/127,759.16 = 53,645.70/x
  3. Step 3: Cross multiply
    85,384.24x = 127,759.16 × 53,645.70
  4. Step 4: Simplify right side
    85,384.24x = 6,853,729,569.61
  5. Step 5: Solve for x
    x = 6,853,729,569.61/85,384.24
  6. Step 6: Final answer
    x = 80,269.26

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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.