Home / 83,577.71-115,309.19-47,742.35

Finding the Fourth Proportional to 83,577.71, 115,309.19 and 47,742.35

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Solution

The fourth proportional to 83,577.71, 115,309.19 and 47,742.35 is: 65,868.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,577.71 : 115,309.19 = 47,742.35 : x
  2. Step 2: Convert to fraction form
    83,577.71/115,309.19 = 47,742.35/x
  3. Step 3: Cross multiply
    83,577.71x = 115,309.19 × 47,742.35
  4. Step 4: Simplify right side
    83,577.71x = 5,505,131,898.62
  5. Step 5: Solve for x
    x = 5,505,131,898.62/83,577.71
  6. Step 6: Final answer
    x = 65,868.42

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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.