Home / 40,190.72-55,462.36-22,285.40

Finding the Fourth Proportional to 40,190.72, 55,462.36 and 22,285.40

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Solution

The fourth proportional to 40,190.72, 55,462.36 and 22,285.40 is: 30,753.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,190.72 : 55,462.36 = 22,285.40 : x
  2. Step 2: Convert to fraction form
    40,190.72/55,462.36 = 22,285.40/x
  3. Step 3: Cross multiply
    40,190.72x = 55,462.36 × 22,285.40
  4. Step 4: Simplify right side
    40,190.72x = 1,236,000,877.54
  5. Step 5: Solve for x
    x = 1,236,000,877.54/40,190.72
  6. Step 6: Final answer
    x = 30,753.39

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Double scale
Find fourth proportional to 40,191.72, 55,463.74 and 22,286.40
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.