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Finding the Fourth Proportional to 48,616.30, 72,940.65 and 43,390.30

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Solution

The fourth proportional to 48,616.30, 72,940.65 and 43,390.30 is: 65,099.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,616.30 : 72,940.65 = 43,390.30 : x
  2. Step 2: Convert to fraction form
    48,616.30/72,940.65 = 43,390.30/x
  3. Step 3: Cross multiply
    48,616.30x = 72,940.65 × 43,390.30
  4. Step 4: Simplify right side
    48,616.30x = 3,164,916,685.70
  5. Step 5: Solve for x
    x = 3,164,916,685.70/48,616.30
  6. Step 6: Final answer
    x = 65,099.91

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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.