Home / 72,555.12-100,125.36-40,723.38

Finding the Fourth Proportional to 72,555.12, 100,125.36 and 40,723.38

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Solution

The fourth proportional to 72,555.12, 100,125.36 and 40,723.38 is: 56,197.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,555.12 : 100,125.36 = 40,723.38 : x
  2. Step 2: Convert to fraction form
    72,555.12/100,125.36 = 40,723.38/x
  3. Step 3: Cross multiply
    72,555.12x = 100,125.36 × 40,723.38
  4. Step 4: Simplify right side
    72,555.12x = 4,077,443,082.92
  5. Step 5: Solve for x
    x = 4,077,443,082.92/72,555.12
  6. Step 6: Final answer
    x = 56,197.87

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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.