Home / 86,561.18-129,500.14-65,561.73

Finding the Fourth Proportional to 86,561.18, 129,500.14 and 65,561.73

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Solution

The fourth proportional to 86,561.18, 129,500.14 and 65,561.73 is: 98,083.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,561.18 : 129,500.14 = 65,561.73 : x
  2. Step 2: Convert to fraction form
    86,561.18/129,500.14 = 65,561.73/x
  3. Step 3: Cross multiply
    86,561.18x = 129,500.14 × 65,561.73
  4. Step 4: Simplify right side
    86,561.18x = 8,490,253,213.64
  5. Step 5: Solve for x
    x = 8,490,253,213.64/86,561.18
  6. Step 6: Final answer
    x = 98,083.84

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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.