Home / 80,973.40-121,431.30-36,621.40

Finding the Fourth Proportional to 80,973.40, 121,431.30 and 36,621.40

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Solution

The fourth proportional to 80,973.40, 121,431.30 and 36,621.40 is: 54,919.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,973.40 : 121,431.30 = 36,621.40 : x
  2. Step 2: Convert to fraction form
    80,973.40/121,431.30 = 36,621.40/x
  3. Step 3: Cross multiply
    80,973.40x = 121,431.30 × 36,621.40
  4. Step 4: Simplify right side
    80,973.40x = 4,446,984,209.82
  5. Step 5: Solve for x
    x = 4,446,984,209.82/80,973.40
  6. Step 6: Final answer
    x = 54,919.07

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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.