Home / 91,638.54-126,290.07-71,463.60

Finding the Fourth Proportional to 91,638.54, 126,290.07 and 71,463.60

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Solution

The fourth proportional to 91,638.54, 126,290.07 and 71,463.60 is: 98,486.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,638.54 : 126,290.07 = 71,463.60 : x
  2. Step 2: Convert to fraction form
    91,638.54/126,290.07 = 71,463.60/x
  3. Step 3: Cross multiply
    91,638.54x = 126,290.07 × 71,463.60
  4. Step 4: Simplify right side
    91,638.54x = 9,025,143,046.45
  5. Step 5: Solve for x
    x = 9,025,143,046.45/91,638.54
  6. Step 6: Final answer
    x = 98,486.33

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1.5x scale

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.