Home / 40,727.12-61,103.40-12,265.20

Finding the Fourth Proportional to 40,727.12, 61,103.40 and 12,265.20

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Solution

The fourth proportional to 40,727.12, 61,103.40 and 12,265.20 is: 18,401.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,727.12 : 61,103.40 = 12,265.20 : x
  2. Step 2: Convert to fraction form
    40,727.12/61,103.40 = 12,265.20/x
  3. Step 3: Cross multiply
    40,727.12x = 61,103.40 × 12,265.20
  4. Step 4: Simplify right side
    40,727.12x = 749,445,421.68
  5. Step 5: Solve for x
    x = 749,445,421.68/40,727.12
  6. Step 6: Final answer
    x = 18,401.63

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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.