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Finding the Fourth Proportional to 66,888.36, 100,349.24 and 47,205.36

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Solution

The fourth proportional to 66,888.36, 100,349.24 and 47,205.36 is: 70,819.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,888.36 : 100,349.24 = 47,205.36 : x
  2. Step 2: Convert to fraction form
    66,888.36/100,349.24 = 47,205.36/x
  3. Step 3: Cross multiply
    66,888.36x = 100,349.24 × 47,205.36
  4. Step 4: Simplify right side
    66,888.36x = 4,737,021,763.90
  5. Step 5: Solve for x
    x = 4,737,021,763.90/66,888.36
  6. Step 6: Final answer
    x = 70,819.82

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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.