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Finding the Fourth Proportional to 86,423.80, 129,614.10 and 33,104.20

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Solution

The fourth proportional to 86,423.80, 129,614.10 and 33,104.20 is: 49,648.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,423.80 : 129,614.10 = 33,104.20 : x
  2. Step 2: Convert to fraction form
    86,423.80/129,614.10 = 33,104.20/x
  3. Step 3: Cross multiply
    86,423.80x = 129,614.10 × 33,104.20
  4. Step 4: Simplify right side
    86,423.80x = 4,290,771,089.22
  5. Step 5: Solve for x
    x = 4,290,771,089.22/86,423.80
  6. Step 6: Final answer
    x = 49,648.03

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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.