Home / 83,689.29-115,511.13-47,899.95

Finding the Fourth Proportional to 83,689.29, 115,511.13 and 47,899.95

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Solution

The fourth proportional to 83,689.29, 115,511.13 and 47,899.95 is: 66,113.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,689.29 : 115,511.13 = 47,899.95 : x
  2. Step 2: Convert to fraction form
    83,689.29/115,511.13 = 47,899.95/x
  3. Step 3: Cross multiply
    83,689.29x = 115,511.13 × 47,899.95
  4. Step 4: Simplify right side
    83,689.29x = 5,532,977,351.44
  5. Step 5: Solve for x
    x = 5,532,977,351.44/83,689.29
  6. Step 6: Final answer
    x = 66,113.33

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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.