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Finding the Fourth Proportional to 60,765.60, 91,147.68 and 19,212.48

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Solution

The fourth proportional to 60,765.60, 91,147.68 and 19,212.48 is: 28,818.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,765.60 : 91,147.68 = 19,212.48 : x
  2. Step 2: Convert to fraction form
    60,765.60/91,147.68 = 19,212.48/x
  3. Step 3: Cross multiply
    60,765.60x = 91,147.68 × 19,212.48
  4. Step 4: Simplify right side
    60,765.60x = 1,751,172,979.05
  5. Step 5: Solve for x
    x = 1,751,172,979.05/60,765.60
  6. Step 6: Final answer
    x = 28,818.49

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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.