Home / 85,402.23-128,083.77-25,418.49

Finding the Fourth Proportional to 85,402.23, 128,083.77 and 25,418.49

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Solution

The fourth proportional to 85,402.23, 128,083.77 and 25,418.49 is: 38,121.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,402.23 : 128,083.77 = 25,418.49 : x
  2. Step 2: Convert to fraction form
    85,402.23/128,083.77 = 25,418.49/x
  3. Step 3: Cross multiply
    85,402.23x = 128,083.77 × 25,418.49
  4. Step 4: Simplify right side
    85,402.23x = 3,255,696,026.91
  5. Step 5: Solve for x
    x = 3,255,696,026.91/85,402.23
  6. Step 6: Final answer
    x = 38,121.91

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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.