Home / 40,781.42-61,155.48-15,816.68

Finding the Fourth Proportional to 40,781.42, 61,155.48 and 15,816.68

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Solution

The fourth proportional to 40,781.42, 61,155.48 and 15,816.68 is: 23,718.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,781.42 : 61,155.48 = 15,816.68 : x
  2. Step 2: Convert to fraction form
    40,781.42/61,155.48 = 15,816.68/x
  3. Step 3: Cross multiply
    40,781.42x = 61,155.48 × 15,816.68
  4. Step 4: Simplify right side
    40,781.42x = 967,276,657.41
  5. Step 5: Solve for x
    x = 967,276,657.41/40,781.42
  6. Step 6: Final answer
    x = 23,718.56

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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.