Home / 83,649.11-115,436.69-45,409.02

Finding the Fourth Proportional to 83,649.11, 115,436.69 and 45,409.02

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Solution

The fourth proportional to 83,649.11, 115,436.69 and 45,409.02 is: 62,664.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,649.11 : 115,436.69 = 45,409.02 : x
  2. Step 2: Convert to fraction form
    83,649.11/115,436.69 = 45,409.02/x
  3. Step 3: Cross multiply
    83,649.11x = 115,436.69 × 45,409.02
  4. Step 4: Simplify right side
    83,649.11x = 5,241,866,737.90
  5. Step 5: Solve for x
    x = 5,241,866,737.90/83,649.11
  6. Step 6: Final answer
    x = 62,664.95

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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.