Home / 78,440.73-108,250.59-48,243.79

Finding the Fourth Proportional to 78,440.73, 108,250.59 and 48,243.79

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Solution

The fourth proportional to 78,440.73, 108,250.59 and 48,243.79 is: 66,577.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,440.73 : 108,250.59 = 48,243.79 : x
  2. Step 2: Convert to fraction form
    78,440.73/108,250.59 = 48,243.79/x
  3. Step 3: Cross multiply
    78,440.73x = 108,250.59 × 48,243.79
  4. Step 4: Simplify right side
    78,440.73x = 5,222,418,731.34
  5. Step 5: Solve for x
    x = 5,222,418,731.34/78,440.73
  6. Step 6: Final answer
    x = 66,577.90

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1.5x scale

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.