Home / 40,890.13-61,356.15-20,113.63

Finding the Fourth Proportional to 40,890.13, 61,356.15 and 20,113.63

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Solution

The fourth proportional to 40,890.13, 61,356.15 and 20,113.63 is: 30,180.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,890.13 : 61,356.15 = 20,113.63 : x
  2. Step 2: Convert to fraction form
    40,890.13/61,356.15 = 20,113.63/x
  3. Step 3: Cross multiply
    40,890.13x = 61,356.15 × 20,113.63
  4. Step 4: Simplify right side
    40,890.13x = 1,234,094,745.93
  5. Step 5: Solve for x
    x = 1,234,094,745.93/40,890.13
  6. Step 6: Final answer
    x = 30,180.75

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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.