Home / 83,736.40-125,590.20-31,118.80

Finding the Fourth Proportional to 83,736.40, 125,590.20 and 31,118.80

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Solution

The fourth proportional to 83,736.40, 125,590.20 and 31,118.80 is: 46,672.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,736.40 : 125,590.20 = 31,118.80 : x
  2. Step 2: Convert to fraction form
    83,736.40/125,590.20 = 31,118.80/x
  3. Step 3: Cross multiply
    83,736.40x = 125,590.20 × 31,118.80
  4. Step 4: Simplify right side
    83,736.40x = 3,908,216,315.76
  5. Step 5: Solve for x
    x = 3,908,216,315.76/83,736.40
  6. Step 6: Final answer
    x = 46,672.85

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1.5x scale

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.