Home / 86,621.40-129,932.10-34,013.40

Finding the Fourth Proportional to 86,621.40, 129,932.10 and 34,013.40

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Solution

The fourth proportional to 86,621.40, 129,932.10 and 34,013.40 is: 51,020.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,621.40 : 129,932.10 = 34,013.40 : x
  2. Step 2: Convert to fraction form
    86,621.40/129,932.10 = 34,013.40/x
  3. Step 3: Cross multiply
    86,621.40x = 129,932.10 × 34,013.40
  4. Step 4: Simplify right side
    86,621.40x = 4,419,432,490.14
  5. Step 5: Solve for x
    x = 4,419,432,490.14/86,621.40
  6. Step 6: Final answer
    x = 51,020.10

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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.