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Finding the Fourth Proportional to 91,641.77, 137,469.03 and 38,313.60

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Solution

The fourth proportional to 91,641.77, 137,469.03 and 38,313.60 is: 57,473.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,641.77 : 137,469.03 = 38,313.60 : x
  2. Step 2: Convert to fraction form
    91,641.77/137,469.03 = 38,313.60/x
  3. Step 3: Cross multiply
    91,641.77x = 137,469.03 × 38,313.60
  4. Step 4: Simplify right side
    91,641.77x = 5,266,933,427.81
  5. Step 5: Solve for x
    x = 5,266,933,427.81/91,641.77
  6. Step 6: Final answer
    x = 57,473.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.