Home / 90,142.96-124,396.50-49,859.68

Finding the Fourth Proportional to 90,142.96, 124,396.50 and 49,859.68

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Solution

The fourth proportional to 90,142.96, 124,396.50 and 49,859.68 is: 68,805.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,142.96 : 124,396.50 = 49,859.68 : x
  2. Step 2: Convert to fraction form
    90,142.96/124,396.50 = 49,859.68/x
  3. Step 3: Cross multiply
    90,142.96x = 124,396.50 × 49,859.68
  4. Step 4: Simplify right side
    90,142.96x = 6,202,369,683.12
  5. Step 5: Solve for x
    x = 6,202,369,683.12/90,142.96
  6. Step 6: Final answer
    x = 68,805.92

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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.