Home / 91,918.20-126,895.49-61,861.53

Finding the Fourth Proportional to 91,918.20, 126,895.49 and 61,861.53

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Solution

The fourth proportional to 91,918.20, 126,895.49 and 61,861.53 is: 85,401.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,918.20 : 126,895.49 = 61,861.53 : x
  2. Step 2: Convert to fraction form
    91,918.20/126,895.49 = 61,861.53/x
  3. Step 3: Cross multiply
    91,918.20x = 126,895.49 × 61,861.53
  4. Step 4: Simplify right side
    91,918.20x = 7,849,949,161.50
  5. Step 5: Solve for x
    x = 7,849,949,161.50/91,918.20
  6. Step 6: Final answer
    x = 85,401.47

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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.