Home / 78,809.45-108,757.01-50,515.12

Finding the Fourth Proportional to 78,809.45, 108,757.01 and 50,515.12

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Solution

The fourth proportional to 78,809.45, 108,757.01 and 50,515.12 is: 69,710.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,809.45 : 108,757.01 = 50,515.12 : x
  2. Step 2: Convert to fraction form
    78,809.45/108,757.01 = 50,515.12/x
  3. Step 3: Cross multiply
    78,809.45x = 108,757.01 × 50,515.12
  4. Step 4: Simplify right side
    78,809.45x = 5,493,872,614.63
  5. Step 5: Solve for x
    x = 5,493,872,614.63/78,809.45
  6. Step 6: Final answer
    x = 69,710.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.