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Finding the Fourth Proportional to 48,620.80, 72,947.40 and 43,394.80

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Solution

The fourth proportional to 48,620.80, 72,947.40 and 43,394.80 is: 65,106.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,620.80 : 72,947.40 = 43,394.80 : x
  2. Step 2: Convert to fraction form
    48,620.80/72,947.40 = 43,394.80/x
  3. Step 3: Cross multiply
    48,620.80x = 72,947.40 × 43,394.80
  4. Step 4: Simplify right side
    48,620.80x = 3,165,537,833.52
  5. Step 5: Solve for x
    x = 3,165,537,833.52/48,620.80
  6. Step 6: Final answer
    x = 65,106.66

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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.