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Finding the Fourth Proportional to 53,179.70, 79,783.38 and 19,902.38

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Solution

The fourth proportional to 53,179.70, 79,783.38 and 19,902.38 is: 29,858.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,179.70 : 79,783.38 = 19,902.38 : x
  2. Step 2: Convert to fraction form
    53,179.70/79,783.38 = 19,902.38/x
  3. Step 3: Cross multiply
    53,179.70x = 79,783.38 × 19,902.38
  4. Step 4: Simplify right side
    53,179.70x = 1,587,878,747.53
  5. Step 5: Solve for x
    x = 1,587,878,747.53/53,179.70
  6. Step 6: Final answer
    x = 29,858.74

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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.