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Finding the Fourth Proportional to 91,990.68, 138,000.34 and 29,667.48

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Solution

The fourth proportional to 91,990.68, 138,000.34 and 29,667.48 is: 44,505.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,990.68 : 138,000.34 = 29,667.48 : x
  2. Step 2: Convert to fraction form
    91,990.68/138,000.34 = 29,667.48/x
  3. Step 3: Cross multiply
    91,990.68x = 138,000.34 × 29,667.48
  4. Step 4: Simplify right side
    91,990.68x = 4,094,122,326.94
  5. Step 5: Solve for x
    x = 4,094,122,326.94/91,990.68
  6. Step 6: Final answer
    x = 44,505.84

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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.