Home / 40,578.34-60,868.18-18,391.90

Finding the Fourth Proportional to 40,578.34, 60,868.18 and 18,391.90

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Solution

The fourth proportional to 40,578.34, 60,868.18 and 18,391.90 is: 27,588.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,578.34 : 60,868.18 = 18,391.90 : x
  2. Step 2: Convert to fraction form
    40,578.34/60,868.18 = 18,391.90/x
  3. Step 3: Cross multiply
    40,578.34x = 60,868.18 × 18,391.90
  4. Step 4: Simplify right side
    40,578.34x = 1,119,481,479.74
  5. Step 5: Solve for x
    x = 1,119,481,479.74/40,578.34
  6. Step 6: Final answer
    x = 27,588.15

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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.