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Finding the Fourth Proportional to 66,947.99, 100,333.82 and 31,403.77

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Solution

The fourth proportional to 66,947.99, 100,333.82 and 31,403.77 is: 47,064.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,947.99 : 100,333.82 = 31,403.77 : x
  2. Step 2: Convert to fraction form
    66,947.99/100,333.82 = 31,403.77/x
  3. Step 3: Cross multiply
    66,947.99x = 100,333.82 × 31,403.77
  4. Step 4: Simplify right side
    66,947.99x = 3,150,860,034.18
  5. Step 5: Solve for x
    x = 3,150,860,034.18/66,947.99
  6. Step 6: Final answer
    x = 47,064.30

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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.