Home / 90,675.87-125,130.20-50,388.59

Finding the Fourth Proportional to 90,675.87, 125,130.20 and 50,388.59

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Solution

The fourth proportional to 90,675.87, 125,130.20 and 50,388.59 is: 69,534.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,675.87 : 125,130.20 = 50,388.59 : x
  2. Step 2: Convert to fraction form
    90,675.87/125,130.20 = 50,388.59/x
  3. Step 3: Cross multiply
    90,675.87x = 125,130.20 × 50,388.59
  4. Step 4: Simplify right side
    90,675.87x = 6,305,134,344.42
  5. Step 5: Solve for x
    x = 6,305,134,344.42/90,675.87
  6. Step 6: Final answer
    x = 69,534.87

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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.