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Finding the Fourth Proportional to 91,999.91, 137,999.87 and 29,670.41

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Solution

The fourth proportional to 91,999.91, 137,999.87 and 29,670.41 is: 44,505.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,999.91 : 137,999.87 = 29,670.41 : x
  2. Step 2: Convert to fraction form
    91,999.91/137,999.87 = 29,670.41/x
  3. Step 3: Cross multiply
    91,999.91x = 137,999.87 × 29,670.41
  4. Step 4: Simplify right side
    91,999.91x = 4,094,512,574.49
  5. Step 5: Solve for x
    x = 4,094,512,574.49/91,999.91
  6. Step 6: Final answer
    x = 44,505.62

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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.