Home / 72,729.90-109,111.86-22,809.60

Finding the Fourth Proportional to 72,729.90, 109,111.86 and 22,809.60

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Solution

The fourth proportional to 72,729.90, 109,111.86 and 22,809.60 is: 34,219.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,729.90 : 109,111.86 = 22,809.60 : x
  2. Step 2: Convert to fraction form
    72,729.90/109,111.86 = 22,809.60/x
  3. Step 3: Cross multiply
    72,729.90x = 109,111.86 × 22,809.60
  4. Step 4: Simplify right side
    72,729.90x = 2,488,797,881.86
  5. Step 5: Solve for x
    x = 2,488,797,881.86/72,729.90
  6. Step 6: Final answer
    x = 34,219.73

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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.