Home / 80,313.49-120,476.15-21,148.75

Finding the Fourth Proportional to 80,313.49, 120,476.15 and 21,148.75

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Solution

The fourth proportional to 80,313.49, 120,476.15 and 21,148.75 is: 31,724.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,313.49 : 120,476.15 = 21,148.75 : x
  2. Step 2: Convert to fraction form
    80,313.49/120,476.15 = 21,148.75/x
  3. Step 3: Cross multiply
    80,313.49x = 120,476.15 × 21,148.75
  4. Step 4: Simplify right side
    80,313.49x = 2,547,919,977.31
  5. Step 5: Solve for x
    x = 2,547,919,977.31/80,313.49
  6. Step 6: Final answer
    x = 31,724.68

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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.