Home / 89,685.19-123,765.56-51,981.31

Finding the Fourth Proportional to 89,685.19, 123,765.56 and 51,981.31

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Solution

The fourth proportional to 89,685.19, 123,765.56 and 51,981.31 is: 71,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,685.19 : 123,765.56 = 51,981.31 : x
  2. Step 2: Convert to fraction form
    89,685.19/123,765.56 = 51,981.31/x
  3. Step 3: Cross multiply
    89,685.19x = 123,765.56 × 51,981.31
  4. Step 4: Simplify right side
    89,685.19x = 6,433,495,567.29
  5. Step 5: Solve for x
    x = 6,433,495,567.29/89,685.19
  6. Step 6: Final answer
    x = 71,734.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.