Home / 91,718.20-126,578.58-53,999.80

Finding the Fourth Proportional to 91,718.20, 126,578.58 and 53,999.80

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Solution

The fourth proportional to 91,718.20, 126,578.58 and 53,999.80 is: 74,524.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,718.20 : 126,578.58 = 53,999.80 : x
  2. Step 2: Convert to fraction form
    91,718.20/126,578.58 = 53,999.80/x
  3. Step 3: Cross multiply
    91,718.20x = 126,578.58 × 53,999.80
  4. Step 4: Simplify right side
    91,718.20x = 6,835,218,004.28
  5. Step 5: Solve for x
    x = 6,835,218,004.28/91,718.20
  6. Step 6: Final answer
    x = 74,524.12

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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.