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Finding the Fourth Proportional to 52,722.70, 78,892.05 and 38,898.70

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Solution

The fourth proportional to 52,722.70, 78,892.05 and 38,898.70 is: 58,206.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,722.70 : 78,892.05 = 38,898.70 : x
  2. Step 2: Convert to fraction form
    52,722.70/78,892.05 = 38,898.70/x
  3. Step 3: Cross multiply
    52,722.70x = 78,892.05 × 38,898.70
  4. Step 4: Simplify right side
    52,722.70x = 3,068,798,185.34
  5. Step 5: Solve for x
    x = 3,068,798,185.34/52,722.70
  6. Step 6: Final answer
    x = 58,206.39

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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.