Home / 40,415.78-60,625.30-20,689.04

Finding the Fourth Proportional to 40,415.78, 60,625.30 and 20,689.04

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Solution

The fourth proportional to 40,415.78, 60,625.30 and 20,689.04 is: 31,034.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,415.78 : 60,625.30 = 20,689.04 : x
  2. Step 2: Convert to fraction form
    40,415.78/60,625.30 = 20,689.04/x
  3. Step 3: Cross multiply
    40,415.78x = 60,625.30 × 20,689.04
  4. Step 4: Simplify right side
    40,415.78x = 1,254,279,256.71
  5. Step 5: Solve for x
    x = 1,254,279,256.71/40,415.78
  6. Step 6: Final answer
    x = 31,034.39

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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.