Home / 80,979.08-121,439.40-34,235.60

Finding the Fourth Proportional to 80,979.08, 121,439.40 and 34,235.60

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Solution

The fourth proportional to 80,979.08, 121,439.40 and 34,235.60 is: 51,341.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,979.08 : 121,439.40 = 34,235.60 : x
  2. Step 2: Convert to fraction form
    80,979.08/121,439.40 = 34,235.60/x
  3. Step 3: Cross multiply
    80,979.08x = 121,439.40 × 34,235.60
  4. Step 4: Simplify right side
    80,979.08x = 4,157,550,722.64
  5. Step 5: Solve for x
    x = 4,157,550,722.64/80,979.08
  6. Step 6: Final answer
    x = 51,341.05

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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.