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Finding the Fourth Proportional to 53,270.88, 79,885.56 and 19,972.78

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Solution

The fourth proportional to 53,270.88, 79,885.56 and 19,972.78 is: 29,951.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,270.88 : 79,885.56 = 19,972.78 : x
  2. Step 2: Convert to fraction form
    53,270.88/79,885.56 = 19,972.78/x
  3. Step 3: Cross multiply
    53,270.88x = 79,885.56 × 19,972.78
  4. Step 4: Simplify right side
    53,270.88x = 1,595,536,715.06
  5. Step 5: Solve for x
    x = 1,595,536,715.06/53,270.88
  6. Step 6: Final answer
    x = 29,951.39

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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.