Home / 40,854.31-61,250.32-21,120.28

Finding the Fourth Proportional to 40,854.31, 61,250.32 and 21,120.28

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Solution

The fourth proportional to 40,854.31, 61,250.32 and 21,120.28 is: 31,664.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,854.31 : 61,250.32 = 21,120.28 : x
  2. Step 2: Convert to fraction form
    40,854.31/61,250.32 = 21,120.28/x
  3. Step 3: Cross multiply
    40,854.31x = 61,250.32 × 21,120.28
  4. Step 4: Simplify right side
    40,854.31x = 1,293,623,781.76
  5. Step 5: Solve for x
    x = 1,293,623,781.76/40,854.31
  6. Step 6: Final answer
    x = 31,664.32

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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.