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Finding the Fourth Proportional to 90,473.60, 135,655.68 and 40,544.48

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Solution

The fourth proportional to 90,473.60, 135,655.68 and 40,544.48 is: 60,792.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,473.60 : 135,655.68 = 40,544.48 : x
  2. Step 2: Convert to fraction form
    90,473.60/135,655.68 = 40,544.48/x
  3. Step 3: Cross multiply
    90,473.60x = 135,655.68 × 40,544.48
  4. Step 4: Simplify right side
    90,473.60x = 5,500,089,004.65
  5. Step 5: Solve for x
    x = 5,500,089,004.65/90,473.60
  6. Step 6: Final answer
    x = 60,792.20

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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.