Home / 61,928-85,429.38-36,418.14

Finding the Fourth Proportional to 61,928, 85,429.38 and 36,418.14

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Solution

The fourth proportional to 61,928, 85,429.38 and 36,418.14 is: 50,238.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,928 : 85,429.38 = 36,418.14 : x
  2. Step 2: Convert to fraction form
    61,928/85,429.38 = 36,418.14/x
  3. Step 3: Cross multiply
    61,928x = 85,429.38 × 36,418.14
  4. Step 4: Simplify right side
    61,928x = 3,111,179,120.95
  5. Step 5: Solve for x
    x = 3,111,179,120.95/61,928
  6. Step 6: Final answer
    x = 50,238.65

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1.5x scale

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.