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Finding the Fourth Proportional to 40,419.69, 60,648.78 and 18,239.87

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Solution

The fourth proportional to 40,419.69, 60,648.78 and 18,239.87 is: 27,368.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,419.69 : 60,648.78 = 18,239.87 : x
  2. Step 2: Convert to fraction form
    40,419.69/60,648.78 = 18,239.87/x
  3. Step 3: Cross multiply
    40,419.69x = 60,648.78 × 18,239.87
  4. Step 4: Simplify right side
    40,419.69x = 1,106,225,559.61
  5. Step 5: Solve for x
    x = 1,106,225,559.61/40,419.69
  6. Step 6: Final answer
    x = 27,368.48

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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.