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Finding the Fourth Proportional to 60,600.81, 90,942.78 and 21,157.92

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Solution

The fourth proportional to 60,600.81, 90,942.78 and 21,157.92 is: 31,751.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,600.81 : 90,942.78 = 21,157.92 : x
  2. Step 2: Convert to fraction form
    60,600.81/90,942.78 = 21,157.92/x
  3. Step 3: Cross multiply
    60,600.81x = 90,942.78 × 21,157.92
  4. Step 4: Simplify right side
    60,600.81x = 1,924,160,063.82
  5. Step 5: Solve for x
    x = 1,924,160,063.82/60,600.81
  6. Step 6: Final answer
    x = 31,751.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.