Home / 86,543.20-129,814.80-36,606.70

Finding the Fourth Proportional to 86,543.20, 129,814.80 and 36,606.70

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Solution

The fourth proportional to 86,543.20, 129,814.80 and 36,606.70 is: 54,910.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,543.20 : 129,814.80 = 36,606.70 : x
  2. Step 2: Convert to fraction form
    86,543.20/129,814.80 = 36,606.70/x
  3. Step 3: Cross multiply
    86,543.20x = 129,814.80 × 36,606.70
  4. Step 4: Simplify right side
    86,543.20x = 4,752,091,439.16
  5. Step 5: Solve for x
    x = 4,752,091,439.16/86,543.20
  6. Step 6: Final answer
    x = 54,910.05

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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.