Home / 90,909.28-125,454.78-53,190.82

Finding the Fourth Proportional to 90,909.28, 125,454.78 and 53,190.82

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Solution

The fourth proportional to 90,909.28, 125,454.78 and 53,190.82 is: 73,403.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,909.28 : 125,454.78 = 53,190.82 : x
  2. Step 2: Convert to fraction form
    90,909.28/125,454.78 = 53,190.82/x
  3. Step 3: Cross multiply
    90,909.28x = 125,454.78 × 53,190.82
  4. Step 4: Simplify right side
    90,909.28x = 6,673,042,621.12
  5. Step 5: Solve for x
    x = 6,673,042,621.12/90,909.28
  6. Step 6: Final answer
    x = 73,403.32

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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.