Home / 109,570.78-164,257.48-39,400.75

Finding the Fourth Proportional to 109,570.78, 164,257.48 and 39,400.75

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Solution

The fourth proportional to 109,570.78, 164,257.48 and 39,400.75 is: 59,065.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,570.78 : 164,257.48 = 39,400.75 : x
  2. Step 2: Convert to fraction form
    109,570.78/164,257.48 = 39,400.75/x
  3. Step 3: Cross multiply
    109,570.78x = 164,257.48 × 39,400.75
  4. Step 4: Simplify right side
    109,570.78x = 6,471,867,905.11
  5. Step 5: Solve for x
    x = 6,471,867,905.11/109,570.78
  6. Step 6: Final answer
    x = 59,065.64

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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.