Home / 86,812.79-119,761.16-56,195.78

Finding the Fourth Proportional to 86,812.79, 119,761.16 and 56,195.78

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Solution

The fourth proportional to 86,812.79, 119,761.16 and 56,195.78 is: 77,523.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,812.79 : 119,761.16 = 56,195.78 : x
  2. Step 2: Convert to fraction form
    86,812.79/119,761.16 = 56,195.78/x
  3. Step 3: Cross multiply
    86,812.79x = 119,761.16 × 56,195.78
  4. Step 4: Simplify right side
    86,812.79x = 6,730,070,920.12
  5. Step 5: Solve for x
    x = 6,730,070,920.12/86,812.79
  6. Step 6: Final answer
    x = 77,523.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.