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Finding the Fourth Proportional to 72,576.17, 108,871.10 and 28,206.33

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Solution

The fourth proportional to 72,576.17, 108,871.10 and 28,206.33 is: 42,312.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,576.17 : 108,871.10 = 28,206.33 : x
  2. Step 2: Convert to fraction form
    72,576.17/108,871.10 = 28,206.33/x
  3. Step 3: Cross multiply
    72,576.17x = 108,871.10 × 28,206.33
  4. Step 4: Simplify right side
    72,576.17x = 3,070,854,174.06
  5. Step 5: Solve for x
    x = 3,070,854,174.06/72,576.17
  6. Step 6: Final answer
    x = 42,312.16

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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.