Home / 91,311.12-125,986.32-53,578.08

Finding the Fourth Proportional to 91,311.12, 125,986.32 and 53,578.08

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Solution

The fourth proportional to 91,311.12, 125,986.32 and 53,578.08 is: 73,924.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,311.12 : 125,986.32 = 53,578.08 : x
  2. Step 2: Convert to fraction form
    91,311.12/125,986.32 = 53,578.08/x
  3. Step 3: Cross multiply
    91,311.12x = 125,986.32 × 53,578.08
  4. Step 4: Simplify right side
    91,311.12x = 6,750,105,131.87
  5. Step 5: Solve for x
    x = 6,750,105,131.87/91,311.12
  6. Step 6: Final answer
    x = 73,924.24

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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.