Home / 78,581.73-108,445.13-48,384.47

Finding the Fourth Proportional to 78,581.73, 108,445.13 and 48,384.47

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Solution

The fourth proportional to 78,581.73, 108,445.13 and 48,384.47 is: 66,772.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,581.73 : 108,445.13 = 48,384.47 : x
  2. Step 2: Convert to fraction form
    78,581.73/108,445.13 = 48,384.47/x
  3. Step 3: Cross multiply
    78,581.73x = 108,445.13 × 48,384.47
  4. Step 4: Simplify right side
    78,581.73x = 5,247,060,531.21
  5. Step 5: Solve for x
    x = 5,247,060,531.21/78,581.73
  6. Step 6: Final answer
    x = 66,772.02

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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.