Home / 66,427.48-99,645.54-31,400.92

Finding the Fourth Proportional to 66,427.48, 99,645.54 and 31,400.92

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Solution

The fourth proportional to 66,427.48, 99,645.54 and 31,400.92 is: 47,103.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,427.48 : 99,645.54 = 31,400.92 : x
  2. Step 2: Convert to fraction form
    66,427.48/99,645.54 = 31,400.92/x
  3. Step 3: Cross multiply
    66,427.48x = 99,645.54 × 31,400.92
  4. Step 4: Simplify right side
    66,427.48x = 3,128,961,629.90
  5. Step 5: Solve for x
    x = 3,128,961,629.90/66,427.48
  6. Step 6: Final answer
    x = 47,103.42

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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.