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Finding the Fourth Proportional to 40,707.96, 61,062 and 11,125.80

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Solution

The fourth proportional to 40,707.96, 61,062 and 11,125.80 is: 16,688.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,707.96 : 61,062 = 11,125.80 : x
  2. Step 2: Convert to fraction form
    40,707.96/61,062 = 11,125.80/x
  3. Step 3: Cross multiply
    40,707.96x = 61,062 × 11,125.80
  4. Step 4: Simplify right side
    40,707.96x = 679,363,599.60
  5. Step 5: Solve for x
    x = 679,363,599.60/40,707.96
  6. Step 6: Final answer
    x = 16,688.72

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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.