Home / 91,449.57-126,176.07-62,778

Finding the Fourth Proportional to 91,449.57, 126,176.07 and 62,778

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Solution

The fourth proportional to 91,449.57, 126,176.07 and 62,778 is: 86,616.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,449.57 : 126,176.07 = 62,778 : x
  2. Step 2: Convert to fraction form
    91,449.57/126,176.07 = 62,778/x
  3. Step 3: Cross multiply
    91,449.57x = 126,176.07 × 62,778
  4. Step 4: Simplify right side
    91,449.57x = 7,921,081,322.46
  5. Step 5: Solve for x
    x = 7,921,081,322.46/91,449.57
  6. Step 6: Final answer
    x = 86,616.93

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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.