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Finding the Fourth Proportional to 90,161.53, 124,420.67 and 49,877.53

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Solution

The fourth proportional to 90,161.53, 124,420.67 and 49,877.53 is: 68,829.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,161.53 : 124,420.67 = 49,877.53 : x
  2. Step 2: Convert to fraction form
    90,161.53/124,420.67 = 49,877.53/x
  3. Step 3: Cross multiply
    90,161.53x = 124,420.67 × 49,877.53
  4. Step 4: Simplify right side
    90,161.53x = 6,205,795,451.16
  5. Step 5: Solve for x
    x = 6,205,795,451.16/90,161.53
  6. Step 6: Final answer
    x = 68,829.75

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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.