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Finding the Fourth Proportional to 108,328, 162,490.56 and 28,365.76

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Solution

The fourth proportional to 108,328, 162,490.56 and 28,365.76 is: 42,548.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,328 : 162,490.56 = 28,365.76 : x
  2. Step 2: Convert to fraction form
    108,328/162,490.56 = 28,365.76/x
  3. Step 3: Cross multiply
    108,328x = 162,490.56 × 28,365.76
  4. Step 4: Simplify right side
    108,328x = 4,609,168,227.23
  5. Step 5: Solve for x
    x = 4,609,168,227.23/108,328
  6. Step 6: Final answer
    x = 42,548.26

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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.