Home / 78,837.76-108,787.20-45,314.56

Finding the Fourth Proportional to 78,837.76, 108,787.20 and 45,314.56

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Solution

The fourth proportional to 78,837.76, 108,787.20 and 45,314.56 is: 62,528.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,837.76 : 108,787.20 = 45,314.56 : x
  2. Step 2: Convert to fraction form
    78,837.76/108,787.20 = 45,314.56/x
  3. Step 3: Cross multiply
    78,837.76x = 108,787.20 × 45,314.56
  4. Step 4: Simplify right side
    78,837.76x = 4,929,644,101.63
  5. Step 5: Solve for x
    x = 4,929,644,101.63/78,837.76
  6. Step 6: Final answer
    x = 62,528.97

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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.