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Finding the Fourth Proportional to 40,572, 60,858.24 and 10,987.68

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Solution

The fourth proportional to 40,572, 60,858.24 and 10,987.68 is: 16,481.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,572 : 60,858.24 = 10,987.68 : x
  2. Step 2: Convert to fraction form
    40,572/60,858.24 = 10,987.68/x
  3. Step 3: Cross multiply
    40,572x = 60,858.24 × 10,987.68
  4. Step 4: Simplify right side
    40,572x = 668,690,866.48
  5. Step 5: Solve for x
    x = 668,690,866.48/40,572
  6. Step 6: Final answer
    x = 16,481.58

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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.