Home / 40,725.12-61,100.40-12,263.20

Finding the Fourth Proportional to 40,725.12, 61,100.40 and 12,263.20

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Solution

The fourth proportional to 40,725.12, 61,100.40 and 12,263.20 is: 18,398.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,725.12 : 61,100.40 = 12,263.20 : x
  2. Step 2: Convert to fraction form
    40,725.12/61,100.40 = 12,263.20/x
  3. Step 3: Cross multiply
    40,725.12x = 61,100.40 × 12,263.20
  4. Step 4: Simplify right side
    40,725.12x = 749,286,425.28
  5. Step 5: Solve for x
    x = 749,286,425.28/40,725.12
  6. Step 6: Final answer
    x = 18,398.63

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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.