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Finding the Fourth Proportional to 71,392.05, 107,254.53 and 61,427.70

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Solution

The fourth proportional to 71,392.05, 107,254.53 and 61,427.70 is: 92,284.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,392.05 : 107,254.53 = 61,427.70 : x
  2. Step 2: Convert to fraction form
    71,392.05/107,254.53 = 61,427.70/x
  3. Step 3: Cross multiply
    71,392.05x = 107,254.53 × 61,427.70
  4. Step 4: Simplify right side
    71,392.05x = 6,588,399,092.48
  5. Step 5: Solve for x
    x = 6,588,399,092.48/71,392.05
  6. Step 6: Final answer
    x = 92,284.77

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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.