Home / 91,195.84-125,834.16-55,378.72

Finding the Fourth Proportional to 91,195.84, 125,834.16 and 55,378.72

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Solution

The fourth proportional to 91,195.84, 125,834.16 and 55,378.72 is: 76,412.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,195.84 : 125,834.16 = 55,378.72 : x
  2. Step 2: Convert to fraction form
    91,195.84/125,834.16 = 55,378.72/x
  3. Step 3: Cross multiply
    91,195.84x = 125,834.16 × 55,378.72
  4. Step 4: Simplify right side
    91,195.84x = 6,968,534,713.08
  5. Step 5: Solve for x
    x = 6,968,534,713.08/91,195.84
  6. Step 6: Final answer
    x = 76,412.86

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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.