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Finding the Fourth Proportional to 40,266.16, 60,400.60 and 10,687

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Solution

The fourth proportional to 40,266.16, 60,400.60 and 10,687 is: 16,030.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,266.16 : 60,400.60 = 10,687 : x
  2. Step 2: Convert to fraction form
    40,266.16/60,400.60 = 10,687/x
  3. Step 3: Cross multiply
    40,266.16x = 60,400.60 × 10,687
  4. Step 4: Simplify right side
    40,266.16x = 645,501,212.20
  5. Step 5: Solve for x
    x = 645,501,212.20/40,266.16
  6. Step 6: Final answer
    x = 16,030.86

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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.