Home / 90,685.45-125,145.45-49,850.53

Finding the Fourth Proportional to 90,685.45, 125,145.45 and 49,850.53

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Solution

The fourth proportional to 90,685.45, 125,145.45 and 49,850.53 is: 68,793.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,685.45 : 125,145.45 = 49,850.53 : x
  2. Step 2: Convert to fraction form
    90,685.45/125,145.45 = 49,850.53/x
  3. Step 3: Cross multiply
    90,685.45x = 125,145.45 × 49,850.53
  4. Step 4: Simplify right side
    90,685.45x = 6,238,567,009.59
  5. Step 5: Solve for x
    x = 6,238,567,009.59/90,685.45
  6. Step 6: Final answer
    x = 68,793.47

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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.