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Finding the Fourth Proportional to 72,631.60, 100,243.52 and 60,512.89

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Solution

The fourth proportional to 72,631.60, 100,243.52 and 60,512.89 is: 83,517.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,631.60 : 100,243.52 = 60,512.89 : x
  2. Step 2: Convert to fraction form
    72,631.60/100,243.52 = 60,512.89/x
  3. Step 3: Cross multiply
    72,631.60x = 100,243.52 × 60,512.89
  4. Step 4: Simplify right side
    72,631.60x = 6,066,024,754.96
  5. Step 5: Solve for x
    x = 6,066,024,754.96/72,631.60
  6. Step 6: Final answer
    x = 83,517.71

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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.