Home / 74,385.13-111,578.60-21,795.68

Finding the Fourth Proportional to 74,385.13, 111,578.60 and 21,795.68

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Solution

The fourth proportional to 74,385.13, 111,578.60 and 21,795.68 is: 32,693.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,385.13 : 111,578.60 = 21,795.68 : x
  2. Step 2: Convert to fraction form
    74,385.13/111,578.60 = 21,795.68/x
  3. Step 3: Cross multiply
    74,385.13x = 111,578.60 × 21,795.68
  4. Step 4: Simplify right side
    74,385.13x = 2,431,931,460.45
  5. Step 5: Solve for x
    x = 2,431,931,460.45/74,385.13
  6. Step 6: Final answer
    x = 32,693.79

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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.