Home / 83,948.76-115,860.35-48,131.78

Finding the Fourth Proportional to 83,948.76, 115,860.35 and 48,131.78

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Solution

The fourth proportional to 83,948.76, 115,860.35 and 48,131.78 is: 66,428.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,948.76 : 115,860.35 = 48,131.78 : x
  2. Step 2: Convert to fraction form
    83,948.76/115,860.35 = 48,131.78/x
  3. Step 3: Cross multiply
    83,948.76x = 115,860.35 × 48,131.78
  4. Step 4: Simplify right side
    83,948.76x = 5,576,564,417.95
  5. Step 5: Solve for x
    x = 5,576,564,417.95/83,948.76
  6. Step 6: Final answer
    x = 66,428.19

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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.