Home / 71,377.20-107,065.80-47,876.40

Finding the Fourth Proportional to 71,377.20, 107,065.80 and 47,876.40

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Solution

The fourth proportional to 71,377.20, 107,065.80 and 47,876.40 is: 71,814.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,377.20 : 107,065.80 = 47,876.40 : x
  2. Step 2: Convert to fraction form
    71,377.20/107,065.80 = 47,876.40/x
  3. Step 3: Cross multiply
    71,377.20x = 107,065.80 × 47,876.40
  4. Step 4: Simplify right side
    71,377.20x = 5,125,925,067.12
  5. Step 5: Solve for x
    x = 5,125,925,067.12/71,377.20
  6. Step 6: Final answer
    x = 71,814.60

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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.