Home / 80,924.80-121,322.40-34,139.20

Finding the Fourth Proportional to 80,924.80, 121,322.40 and 34,139.20

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Solution

The fourth proportional to 80,924.80, 121,322.40 and 34,139.20 is: 51,181.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,924.80 : 121,322.40 = 34,139.20 : x
  2. Step 2: Convert to fraction form
    80,924.80/121,322.40 = 34,139.20/x
  3. Step 3: Cross multiply
    80,924.80x = 121,322.40 × 34,139.20
  4. Step 4: Simplify right side
    80,924.80x = 4,141,849,678.08
  5. Step 5: Solve for x
    x = 4,141,849,678.08/80,924.80
  6. Step 6: Final answer
    x = 51,181.46

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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.