Home / 90,639.10-125,082.09-50,351.83

Finding the Fourth Proportional to 90,639.10, 125,082.09 and 50,351.83

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Solution

The fourth proportional to 90,639.10, 125,082.09 and 50,351.83 is: 69,485.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,639.10 : 125,082.09 = 50,351.83 : x
  2. Step 2: Convert to fraction form
    90,639.10/125,082.09 = 50,351.83/x
  3. Step 3: Cross multiply
    90,639.10x = 125,082.09 × 50,351.83
  4. Step 4: Simplify right side
    90,639.10x = 6,298,111,819.02
  5. Step 5: Solve for x
    x = 6,298,111,819.02/90,639.10
  6. Step 6: Final answer
    x = 69,485.59

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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.