Home / 92,912.72-128,219.78-50,470.36

Finding the Fourth Proportional to 92,912.72, 128,219.78 and 50,470.36

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Solution

The fourth proportional to 92,912.72, 128,219.78 and 50,470.36 is: 69,649.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,912.72 : 128,219.78 = 50,470.36 : x
  2. Step 2: Convert to fraction form
    92,912.72/128,219.78 = 50,470.36/x
  3. Step 3: Cross multiply
    92,912.72x = 128,219.78 × 50,470.36
  4. Step 4: Simplify right side
    92,912.72x = 6,471,298,455.72
  5. Step 5: Solve for x
    x = 6,471,298,455.72/92,912.72
  6. Step 6: Final answer
    x = 69,649.22

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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.