Home / 75,877.20-113,815.80-19,712.70

Finding the Fourth Proportional to 75,877.20, 113,815.80 and 19,712.70

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Solution

The fourth proportional to 75,877.20, 113,815.80 and 19,712.70 is: 29,569.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,877.20 : 113,815.80 = 19,712.70 : x
  2. Step 2: Convert to fraction form
    75,877.20/113,815.80 = 19,712.70/x
  3. Step 3: Cross multiply
    75,877.20x = 113,815.80 × 19,712.70
  4. Step 4: Simplify right side
    75,877.20x = 2,243,616,720.66
  5. Step 5: Solve for x
    x = 2,243,616,720.66/75,877.20
  6. Step 6: Final answer
    x = 29,569.05

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Similar ratio
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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.