Home / 86,008.17-129,020.40-33,421.71

Finding the Fourth Proportional to 86,008.17, 129,020.40 and 33,421.71

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Solution

The fourth proportional to 86,008.17, 129,020.40 and 33,421.71 is: 50,135.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,008.17 : 129,020.40 = 33,421.71 : x
  2. Step 2: Convert to fraction form
    86,008.17/129,020.40 = 33,421.71/x
  3. Step 3: Cross multiply
    86,008.17x = 129,020.40 × 33,421.71
  4. Step 4: Simplify right side
    86,008.17x = 4,312,082,392.88
  5. Step 5: Solve for x
    x = 4,312,082,392.88/86,008.17
  6. Step 6: Final answer
    x = 50,135.73

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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.