Home / 81,584.72-112,377.14-57,670.28

Finding the Fourth Proportional to 81,584.72, 112,377.14 and 57,670.28

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Solution

The fourth proportional to 81,584.72, 112,377.14 and 57,670.28 is: 79,436.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,584.72 : 112,377.14 = 57,670.28 : x
  2. Step 2: Convert to fraction form
    81,584.72/112,377.14 = 57,670.28/x
  3. Step 3: Cross multiply
    81,584.72x = 112,377.14 × 57,670.28
  4. Step 4: Simplify right side
    81,584.72x = 6,480,820,279.16
  5. Step 5: Solve for x
    x = 6,480,820,279.16/81,584.72
  6. Step 6: Final answer
    x = 79,436.70

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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.