Home / 80,776.34-121,164.55-38,646.51

Finding the Fourth Proportional to 80,776.34, 121,164.55 and 38,646.51

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Solution

The fourth proportional to 80,776.34, 121,164.55 and 38,646.51 is: 57,969.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,776.34 : 121,164.55 = 38,646.51 : x
  2. Step 2: Convert to fraction form
    80,776.34/121,164.55 = 38,646.51/x
  3. Step 3: Cross multiply
    80,776.34x = 121,164.55 × 38,646.51
  4. Step 4: Simplify right side
    80,776.34x = 4,682,586,896.60
  5. Step 5: Solve for x
    x = 4,682,586,896.60/80,776.34
  6. Step 6: Final answer
    x = 57,969.78

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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.