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Finding the Fourth Proportional to 109,959.40, 165,003.90 and 39,829.60

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Solution

The fourth proportional to 109,959.40, 165,003.90 and 39,829.60 is: 59,767.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,959.40 : 165,003.90 = 39,829.60 : x
  2. Step 2: Convert to fraction form
    109,959.40/165,003.90 = 39,829.60/x
  3. Step 3: Cross multiply
    109,959.40x = 165,003.90 × 39,829.60
  4. Step 4: Simplify right side
    109,959.40x = 6,572,039,335.44
  5. Step 5: Solve for x
    x = 6,572,039,335.44/109,959.40
  6. Step 6: Final answer
    x = 59,767.87

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1.5x scale

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.