Home / 86,091.20-129,116.24-36,172.24

Finding the Fourth Proportional to 86,091.20, 129,116.24 and 36,172.24

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Solution

The fourth proportional to 86,091.20, 129,116.24 and 36,172.24 is: 54,249.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,091.20 : 129,116.24 = 36,172.24 : x
  2. Step 2: Convert to fraction form
    86,091.20/129,116.24 = 36,172.24/x
  3. Step 3: Cross multiply
    86,091.20x = 129,116.24 × 36,172.24
  4. Step 4: Simplify right side
    86,091.20x = 4,670,423,621.18
  5. Step 5: Solve for x
    x = 4,670,423,621.18/86,091.20
  6. Step 6: Final answer
    x = 54,249.72

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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.