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Finding the Fourth Proportional to 72,283.48, 108,425.36 and 47,344.40

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Solution

The fourth proportional to 72,283.48, 108,425.36 and 47,344.40 is: 71,016.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,283.48 : 108,425.36 = 47,344.40 : x
  2. Step 2: Convert to fraction form
    72,283.48/108,425.36 = 47,344.40/x
  3. Step 3: Cross multiply
    72,283.48x = 108,425.36 × 47,344.40
  4. Step 4: Simplify right side
    72,283.48x = 5,133,333,613.98
  5. Step 5: Solve for x
    x = 5,133,333,613.98/72,283.48
  6. Step 6: Final answer
    x = 71,016.69

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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.