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Finding the Fourth Proportional to 40,398.72, 60,574 and 16,687.84

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Solution

The fourth proportional to 40,398.72, 60,574 and 16,687.84 is: 25,021.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,398.72 : 60,574 = 16,687.84 : x
  2. Step 2: Convert to fraction form
    40,398.72/60,574 = 16,687.84/x
  3. Step 3: Cross multiply
    40,398.72x = 60,574 × 16,687.84
  4. Step 4: Simplify right side
    40,398.72x = 1,010,849,220.16
  5. Step 5: Solve for x
    x = 1,010,849,220.16/40,398.72
  6. Step 6: Final answer
    x = 25,021.81

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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.