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Finding the Fourth Proportional to 86,588.28, 129,881 and 27,423.84

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Solution

The fourth proportional to 86,588.28, 129,881 and 27,423.84 is: 41,135.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,588.28 : 129,881 = 27,423.84 : x
  2. Step 2: Convert to fraction form
    86,588.28/129,881 = 27,423.84/x
  3. Step 3: Cross multiply
    86,588.28x = 129,881 × 27,423.84
  4. Step 4: Simplify right side
    86,588.28x = 3,561,835,763.04
  5. Step 5: Solve for x
    x = 3,561,835,763.04/86,588.28
  6. Step 6: Final answer
    x = 41,135.31

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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.