Home / 66,929.36-100,400.34-47,775.38

Finding the Fourth Proportional to 66,929.36, 100,400.34 and 47,775.38

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Solution

The fourth proportional to 66,929.36, 100,400.34 and 47,775.38 is: 71,667.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,929.36 : 100,400.34 = 47,775.38 : x
  2. Step 2: Convert to fraction form
    66,929.36/100,400.34 = 47,775.38/x
  3. Step 3: Cross multiply
    66,929.36x = 100,400.34 × 47,775.38
  4. Step 4: Simplify right side
    66,929.36x = 4,796,664,395.63
  5. Step 5: Solve for x
    x = 4,796,664,395.63/66,929.36
  6. Step 6: Final answer
    x = 71,667.57

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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.