Home / 83,765.40-125,633.70-31,147.80

Finding the Fourth Proportional to 83,765.40, 125,633.70 and 31,147.80

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Solution

The fourth proportional to 83,765.40, 125,633.70 and 31,147.80 is: 46,716.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,765.40 : 125,633.70 = 31,147.80 : x
  2. Step 2: Convert to fraction form
    83,765.40/125,633.70 = 31,147.80/x
  3. Step 3: Cross multiply
    83,765.40x = 125,633.70 × 31,147.80
  4. Step 4: Simplify right side
    83,765.40x = 3,913,213,360.86
  5. Step 5: Solve for x
    x = 3,913,213,360.86/83,765.40
  6. Step 6: Final answer
    x = 46,716.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.