Home / 90,029.10-124,229.43-49,740.42

Finding the Fourth Proportional to 90,029.10, 124,229.43 and 49,740.42

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Solution

The fourth proportional to 90,029.10, 124,229.43 and 49,740.42 is: 68,635.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,029.10 : 124,229.43 = 49,740.42 : x
  2. Step 2: Convert to fraction form
    90,029.10/124,229.43 = 49,740.42/x
  3. Step 3: Cross multiply
    90,029.10x = 124,229.43 × 49,740.42
  4. Step 4: Simplify right side
    90,029.10x = 6,179,224,024.56
  5. Step 5: Solve for x
    x = 6,179,224,024.56/90,029.10
  6. Step 6: Final answer
    x = 68,635.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.