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Finding the Fourth Proportional to 61,489.40, 92,234.10 and 30,320.60

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Solution

The fourth proportional to 61,489.40, 92,234.10 and 30,320.60 is: 45,480.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,489.40 : 92,234.10 = 30,320.60 : x
  2. Step 2: Convert to fraction form
    61,489.40/92,234.10 = 30,320.60/x
  3. Step 3: Cross multiply
    61,489.40x = 92,234.10 × 30,320.60
  4. Step 4: Simplify right side
    61,489.40x = 2,796,593,252.46
  5. Step 5: Solve for x
    x = 2,796,593,252.46/61,489.40
  6. Step 6: Final answer
    x = 45,480.90

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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.