Home / 91,360.12-126,115.80-55,561.60

Finding the Fourth Proportional to 91,360.12, 126,115.80 and 55,561.60

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Solution

The fourth proportional to 91,360.12, 126,115.80 and 55,561.60 is: 76,698.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,360.12 : 126,115.80 = 55,561.60 : x
  2. Step 2: Convert to fraction form
    91,360.12/126,115.80 = 55,561.60/x
  3. Step 3: Cross multiply
    91,360.12x = 126,115.80 × 55,561.60
  4. Step 4: Simplify right side
    91,360.12x = 7,007,195,633.28
  5. Step 5: Solve for x
    x = 7,007,195,633.28/91,360.12
  6. Step 6: Final answer
    x = 76,698.63

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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.