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Finding the Fourth Proportional to 90,502.48, 135,798.90 and 40,618.24

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Solution

The fourth proportional to 90,502.48, 135,798.90 and 40,618.24 is: 60,947.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,502.48 : 135,798.90 = 40,618.24 : x
  2. Step 2: Convert to fraction form
    90,502.48/135,798.90 = 40,618.24/x
  3. Step 3: Cross multiply
    90,502.48x = 135,798.90 × 40,618.24
  4. Step 4: Simplify right side
    90,502.48x = 5,515,912,311.94
  5. Step 5: Solve for x
    x = 5,515,912,311.94/90,502.48
  6. Step 6: Final answer
    x = 60,947.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.