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Finding the Fourth Proportional to 45,240, 67,860 and 15,649.89

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Solution

The fourth proportional to 45,240, 67,860 and 15,649.89 is: 23,474.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,240 : 67,860 = 15,649.89 : x
  2. Step 2: Convert to fraction form
    45,240/67,860 = 15,649.89/x
  3. Step 3: Cross multiply
    45,240x = 67,860 × 15,649.89
  4. Step 4: Simplify right side
    45,240x = 1,062,001,535.40
  5. Step 5: Solve for x
    x = 1,062,001,535.40/45,240
  6. Step 6: Final answer
    x = 23,474.84

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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.