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Finding the Fourth Proportional to 53,177.64, 79,770.78 and 19,439.88

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Solution

The fourth proportional to 53,177.64, 79,770.78 and 19,439.88 is: 29,161.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,177.64 : 79,770.78 = 19,439.88 : x
  2. Step 2: Convert to fraction form
    53,177.64/79,770.78 = 19,439.88/x
  3. Step 3: Cross multiply
    53,177.64x = 79,770.78 × 19,439.88
  4. Step 4: Simplify right side
    53,177.64x = 1,550,734,390.71
  5. Step 5: Solve for x
    x = 1,550,734,390.71/53,177.64
  6. Step 6: Final answer
    x = 29,161.40

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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.