Home / 83,690.29-115,512.51-47,900.95

Finding the Fourth Proportional to 83,690.29, 115,512.51 and 47,900.95

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Solution

The fourth proportional to 83,690.29, 115,512.51 and 47,900.95 is: 66,114.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,690.29 : 115,512.51 = 47,900.95 : x
  2. Step 2: Convert to fraction form
    83,690.29/115,512.51 = 47,900.95/x
  3. Step 3: Cross multiply
    83,690.29x = 115,512.51 × 47,900.95
  4. Step 4: Simplify right side
    83,690.29x = 5,533,158,965.88
  5. Step 5: Solve for x
    x = 5,533,158,965.88/83,690.29
  6. Step 6: Final answer
    x = 66,114.71

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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.