Home / 74,557.72-111,819.79-21,248.60

Finding the Fourth Proportional to 74,557.72, 111,819.79 and 21,248.60

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Solution

The fourth proportional to 74,557.72, 111,819.79 and 21,248.60 is: 31,868.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,557.72 : 111,819.79 = 21,248.60 : x
  2. Step 2: Convert to fraction form
    74,557.72/111,819.79 = 21,248.60/x
  3. Step 3: Cross multiply
    74,557.72x = 111,819.79 × 21,248.60
  4. Step 4: Simplify right side
    74,557.72x = 2,376,014,400.74
  5. Step 5: Solve for x
    x = 2,376,014,400.74/74,557.72
  6. Step 6: Final answer
    x = 31,868.12

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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.