Home / 90,118.10-124,361.16-49,833.56

Finding the Fourth Proportional to 90,118.10, 124,361.16 and 49,833.56

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Solution

The fourth proportional to 90,118.10, 124,361.16 and 49,833.56 is: 68,769.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,118.10 : 124,361.16 = 49,833.56 : x
  2. Step 2: Convert to fraction form
    90,118.10/124,361.16 = 49,833.56/x
  3. Step 3: Cross multiply
    90,118.10x = 124,361.16 × 49,833.56
  4. Step 4: Simplify right side
    90,118.10x = 6,197,359,328.53
  5. Step 5: Solve for x
    x = 6,197,359,328.53/90,118.10
  6. Step 6: Final answer
    x = 68,769.31

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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.