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Finding the Fourth Proportional to 72,497.01, 100,040.76 and 40,233.30

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Solution

The fourth proportional to 72,497.01, 100,040.76 and 40,233.30 is: 55,519.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,497.01 : 100,040.76 = 40,233.30 : x
  2. Step 2: Convert to fraction form
    72,497.01/100,040.76 = 40,233.30/x
  3. Step 3: Cross multiply
    72,497.01x = 100,040.76 × 40,233.30
  4. Step 4: Simplify right side
    72,497.01x = 4,024,969,909.31
  5. Step 5: Solve for x
    x = 4,024,969,909.31/72,497.01
  6. Step 6: Final answer
    x = 55,519.12

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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.