Home / 72,948.75-100,669.29-39,414.75

Finding the Fourth Proportional to 72,948.75, 100,669.29 and 39,414.75

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Solution

The fourth proportional to 72,948.75, 100,669.29 and 39,414.75 is: 54,392.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,948.75 : 100,669.29 = 39,414.75 : x
  2. Step 2: Convert to fraction form
    72,948.75/100,669.29 = 39,414.75/x
  3. Step 3: Cross multiply
    72,948.75x = 100,669.29 × 39,414.75
  4. Step 4: Simplify right side
    72,948.75x = 3,967,854,898.03
  5. Step 5: Solve for x
    x = 3,967,854,898.03/72,948.75
  6. Step 6: Final answer
    x = 54,392.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.