Home / 61,765.78-85,244.33-40,278.51

Finding the Fourth Proportional to 61,765.78, 85,244.33 and 40,278.51

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Solution

The fourth proportional to 61,765.78, 85,244.33 and 40,278.51 is: 55,589.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,765.78 : 85,244.33 = 40,278.51 : x
  2. Step 2: Convert to fraction form
    61,765.78/85,244.33 = 40,278.51/x
  3. Step 3: Cross multiply
    61,765.78x = 85,244.33 × 40,278.51
  4. Step 4: Simplify right side
    61,765.78x = 3,433,514,598.35
  5. Step 5: Solve for x
    x = 3,433,514,598.35/61,765.78
  6. Step 6: Final answer
    x = 55,589.27

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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.