Home / 90,815.32-125,325.76-50,530.78

Finding the Fourth Proportional to 90,815.32, 125,325.76 and 50,530.78

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Solution

The fourth proportional to 90,815.32, 125,325.76 and 50,530.78 is: 69,732.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,815.32 : 125,325.76 = 50,530.78 : x
  2. Step 2: Convert to fraction form
    90,815.32/125,325.76 = 50,530.78/x
  3. Step 3: Cross multiply
    90,815.32x = 125,325.76 × 50,530.78
  4. Step 4: Simplify right side
    90,815.32x = 6,332,808,406.89
  5. Step 5: Solve for x
    x = 6,332,808,406.89/90,815.32
  6. Step 6: Final answer
    x = 69,732.82

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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.