Home / 90,781.20-125,281.62-54,950.94

Finding the Fourth Proportional to 90,781.20, 125,281.62 and 54,950.94

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Solution

The fourth proportional to 90,781.20, 125,281.62 and 54,950.94 is: 75,834.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,781.20 : 125,281.62 = 54,950.94 : x
  2. Step 2: Convert to fraction form
    90,781.20/125,281.62 = 54,950.94/x
  3. Step 3: Cross multiply
    90,781.20x = 125,281.62 × 54,950.94
  4. Step 4: Simplify right side
    90,781.20x = 6,884,342,783.72
  5. Step 5: Solve for x
    x = 6,884,342,783.72/90,781.20
  6. Step 6: Final answer
    x = 75,834.45

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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.