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Finding the Fourth Proportional to 61,689.80, 92,478 and 22,237.28

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Solution

The fourth proportional to 61,689.80, 92,478 and 22,237.28 is: 33,335.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,689.80 : 92,478 = 22,237.28 : x
  2. Step 2: Convert to fraction form
    61,689.80/92,478 = 22,237.28/x
  3. Step 3: Cross multiply
    61,689.80x = 92,478 × 22,237.28
  4. Step 4: Simplify right side
    61,689.80x = 2,056,459,179.84
  5. Step 5: Solve for x
    x = 2,056,459,179.84/61,689.80
  6. Step 6: Final answer
    x = 33,335.48

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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.