Home / 85,279.20-117,693.76-63,731.52

Finding the Fourth Proportional to 85,279.20, 117,693.76 and 63,731.52

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Solution

The fourth proportional to 85,279.20, 117,693.76 and 63,731.52 is: 87,955.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,279.20 : 117,693.76 = 63,731.52 : x
  2. Step 2: Convert to fraction form
    85,279.20/117,693.76 = 63,731.52/x
  3. Step 3: Cross multiply
    85,279.20x = 117,693.76 × 63,731.52
  4. Step 4: Simplify right side
    85,279.20x = 7,500,802,219.32
  5. Step 5: Solve for x
    x = 7,500,802,219.32/85,279.20
  6. Step 6: Final answer
    x = 87,955.82

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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.