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Finding the Fourth Proportional to 40,120.40, 60,115.80 and 25,302.80

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Solution

The fourth proportional to 40,120.40, 60,115.80 and 25,302.80 is: 37,913.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,120.40 : 60,115.80 = 25,302.80 : x
  2. Step 2: Convert to fraction form
    40,120.40/60,115.80 = 25,302.80/x
  3. Step 3: Cross multiply
    40,120.40x = 60,115.80 × 25,302.80
  4. Step 4: Simplify right side
    40,120.40x = 1,521,098,064.24
  5. Step 5: Solve for x
    x = 1,521,098,064.24/40,120.40
  6. Step 6: Final answer
    x = 37,913.33

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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.