Home / 61,132.38-91,712.40-21,689.54

Finding the Fourth Proportional to 61,132.38, 91,712.40 and 21,689.54

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Solution

The fourth proportional to 61,132.38, 91,712.40 and 21,689.54 is: 32,539.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,132.38 : 91,712.40 = 21,689.54 : x
  2. Step 2: Convert to fraction form
    61,132.38/91,712.40 = 21,689.54/x
  3. Step 3: Cross multiply
    61,132.38x = 91,712.40 × 21,689.54
  4. Step 4: Simplify right side
    61,132.38x = 1,989,199,768.30
  5. Step 5: Solve for x
    x = 1,989,199,768.30/61,132.38
  6. Step 6: Final answer
    x = 32,539.22

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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.