Home / 81,930.64-113,034.52-47,928.48

Finding the Fourth Proportional to 81,930.64, 113,034.52 and 47,928.48

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Solution

The fourth proportional to 81,930.64, 113,034.52 and 47,928.48 is: 66,123.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,930.64 : 113,034.52 = 47,928.48 : x
  2. Step 2: Convert to fraction form
    81,930.64/113,034.52 = 47,928.48/x
  3. Step 3: Cross multiply
    81,930.64x = 113,034.52 × 47,928.48
  4. Step 4: Simplify right side
    81,930.64x = 5,417,572,731.13
  5. Step 5: Solve for x
    x = 5,417,572,731.13/81,930.64
  6. Step 6: Final answer
    x = 66,123.89

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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.