Home / 109,621.80-164,478.06-39,508.20

Finding the Fourth Proportional to 109,621.80, 164,478.06 and 39,508.20

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Solution

The fourth proportional to 109,621.80, 164,478.06 and 39,508.20 is: 59,278.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,621.80 : 164,478.06 = 39,508.20 : x
  2. Step 2: Convert to fraction form
    109,621.80/164,478.06 = 39,508.20/x
  3. Step 3: Cross multiply
    109,621.80x = 164,478.06 × 39,508.20
  4. Step 4: Simplify right side
    109,621.80x = 6,498,232,090.09
  5. Step 5: Solve for x
    x = 6,498,232,090.09/109,621.80
  6. Step 6: Final answer
    x = 59,278.65

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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.