Home / 91,002.20-125,581.14-50,715.80

Finding the Fourth Proportional to 91,002.20, 125,581.14 and 50,715.80

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Solution

The fourth proportional to 91,002.20, 125,581.14 and 50,715.80 is: 69,986.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,002.20 : 125,581.14 = 50,715.80 : x
  2. Step 2: Convert to fraction form
    91,002.20/125,581.14 = 50,715.80/x
  3. Step 3: Cross multiply
    91,002.20x = 125,581.14 × 50,715.80
  4. Step 4: Simplify right side
    91,002.20x = 6,368,947,980.01
  5. Step 5: Solve for x
    x = 6,368,947,980.01/91,002.20
  6. Step 6: Final answer
    x = 69,986.75

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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.