Home / 86,574.10-129,861.15-76,659.70

Finding the Fourth Proportional to 86,574.10, 129,861.15 and 76,659.70

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Solution

The fourth proportional to 86,574.10, 129,861.15 and 76,659.70 is: 114,989.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,574.10 : 129,861.15 = 76,659.70 : x
  2. Step 2: Convert to fraction form
    86,574.10/129,861.15 = 76,659.70/x
  3. Step 3: Cross multiply
    86,574.10x = 129,861.15 × 76,659.70
  4. Step 4: Simplify right side
    86,574.10x = 9,955,116,800.66
  5. Step 5: Solve for x
    x = 9,955,116,800.66/86,574.10
  6. Step 6: Final answer
    x = 114,989.55

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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.