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Finding the Fourth Proportional to 72,493.06, 100,046.46 and 40,230.72

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Solution

The fourth proportional to 72,493.06, 100,046.46 and 40,230.72 is: 55,521.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,493.06 : 100,046.46 = 40,230.72 : x
  2. Step 2: Convert to fraction form
    72,493.06/100,046.46 = 40,230.72/x
  3. Step 3: Cross multiply
    72,493.06x = 100,046.46 × 40,230.72
  4. Step 4: Simplify right side
    72,493.06x = 4,024,941,119.25
  5. Step 5: Solve for x
    x = 4,024,941,119.25/72,493.06
  6. Step 6: Final answer
    x = 55,521.74

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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.