Home / 90,720.50-125,198.56-50,434.94

Finding the Fourth Proportional to 90,720.50, 125,198.56 and 50,434.94

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Solution

The fourth proportional to 90,720.50, 125,198.56 and 50,434.94 is: 69,602.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,720.50 : 125,198.56 = 50,434.94 : x
  2. Step 2: Convert to fraction form
    90,720.50/125,198.56 = 50,434.94/x
  3. Step 3: Cross multiply
    90,720.50x = 125,198.56 × 50,434.94
  4. Step 4: Simplify right side
    90,720.50x = 6,314,381,235.69
  5. Step 5: Solve for x
    x = 6,314,381,235.69/90,720.50
  6. Step 6: Final answer
    x = 69,602.58

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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.