Home / 74,209.86-111,287.10-29,821.60

Finding the Fourth Proportional to 74,209.86, 111,287.10 and 29,821.60

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Solution

The fourth proportional to 74,209.86, 111,287.10 and 29,821.60 is: 44,721.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,209.86 : 111,287.10 = 29,821.60 : x
  2. Step 2: Convert to fraction form
    74,209.86/111,287.10 = 29,821.60/x
  3. Step 3: Cross multiply
    74,209.86x = 111,287.10 × 29,821.60
  4. Step 4: Simplify right side
    74,209.86x = 3,318,759,381.36
  5. Step 5: Solve for x
    x = 3,318,759,381.36/74,209.86
  6. Step 6: Final answer
    x = 44,721.27

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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.