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Finding the Fourth Proportional to 53,544.79, 80,349.99 and 42,489.55

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Solution

The fourth proportional to 53,544.79, 80,349.99 and 42,489.55 is: 63,760.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,544.79 : 80,349.99 = 42,489.55 : x
  2. Step 2: Convert to fraction form
    53,544.79/80,349.99 = 42,489.55/x
  3. Step 3: Cross multiply
    53,544.79x = 80,349.99 × 42,489.55
  4. Step 4: Simplify right side
    53,544.79x = 3,414,034,917.60
  5. Step 5: Solve for x
    x = 3,414,034,917.60/53,544.79
  6. Step 6: Final answer
    x = 63,760.36

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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.