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Finding the Fourth Proportional to 60,388.70, 90,473.70 and 51,640.70

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Solution

The fourth proportional to 60,388.70, 90,473.70 and 51,640.70 is: 77,367.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,388.70 : 90,473.70 = 51,640.70 : x
  2. Step 2: Convert to fraction form
    60,388.70/90,473.70 = 51,640.70/x
  3. Step 3: Cross multiply
    60,388.70x = 90,473.70 × 51,640.70
  4. Step 4: Simplify right side
    60,388.70x = 4,672,125,199.59
  5. Step 5: Solve for x
    x = 4,672,125,199.59/60,388.70
  6. Step 6: Final answer
    x = 77,367.54

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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.