Home / 75,969.05-113,953.65-19,809.11

Finding the Fourth Proportional to 75,969.05, 113,953.65 and 19,809.11

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Solution

The fourth proportional to 75,969.05, 113,953.65 and 19,809.11 is: 29,713.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,969.05 : 113,953.65 = 19,809.11 : x
  2. Step 2: Convert to fraction form
    75,969.05/113,953.65 = 19,809.11/x
  3. Step 3: Cross multiply
    75,969.05x = 113,953.65 × 19,809.11
  4. Step 4: Simplify right side
    75,969.05x = 2,257,320,387.75
  5. Step 5: Solve for x
    x = 2,257,320,387.75/75,969.05
  6. Step 6: Final answer
    x = 29,713.68

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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.