Home / 91,661.12-137,489.76-29,331.68

Finding the Fourth Proportional to 91,661.12, 137,489.76 and 29,331.68

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Solution

The fourth proportional to 91,661.12, 137,489.76 and 29,331.68 is: 43,996.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,661.12 : 137,489.76 = 29,331.68 : x
  2. Step 2: Convert to fraction form
    91,661.12/137,489.76 = 29,331.68/x
  3. Step 3: Cross multiply
    91,661.12x = 137,489.76 × 29,331.68
  4. Step 4: Simplify right side
    91,661.12x = 4,032,805,643.60
  5. Step 5: Solve for x
    x = 4,032,805,643.60/91,661.12
  6. Step 6: Final answer
    x = 43,996.91

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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.