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Finding the Fourth Proportional to 108,281.80, 162,422.70 and 61,625.80

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Solution

The fourth proportional to 108,281.80, 162,422.70 and 61,625.80 is: 92,438.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,281.80 : 162,422.70 = 61,625.80 : x
  2. Step 2: Convert to fraction form
    108,281.80/162,422.70 = 61,625.80/x
  3. Step 3: Cross multiply
    108,281.80x = 162,422.70 × 61,625.80
  4. Step 4: Simplify right side
    108,281.80x = 10,009,428,825.66
  5. Step 5: Solve for x
    x = 10,009,428,825.66/108,281.80
  6. Step 6: Final answer
    x = 92,438.70

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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.