Home / 86,517.59-129,714.08-53,168.76

Finding the Fourth Proportional to 86,517.59, 129,714.08 and 53,168.76

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Solution

The fourth proportional to 86,517.59, 129,714.08 and 53,168.76 is: 79,714.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,517.59 : 129,714.08 = 53,168.76 : x
  2. Step 2: Convert to fraction form
    86,517.59/129,714.08 = 53,168.76/x
  3. Step 3: Cross multiply
    86,517.59x = 129,714.08 × 53,168.76
  4. Step 4: Simplify right side
    86,517.59x = 6,896,736,522.30
  5. Step 5: Solve for x
    x = 6,896,736,522.30/86,517.59
  6. Step 6: Final answer
    x = 79,714.85

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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.