Home / 72,669.34-109,002.90-20,077.66

Finding the Fourth Proportional to 72,669.34, 109,002.90 and 20,077.66

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Solution

The fourth proportional to 72,669.34, 109,002.90 and 20,077.66 is: 30,116.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,669.34 : 109,002.90 = 20,077.66 : x
  2. Step 2: Convert to fraction form
    72,669.34/109,002.90 = 20,077.66/x
  3. Step 3: Cross multiply
    72,669.34x = 109,002.90 × 20,077.66
  4. Step 4: Simplify right side
    72,669.34x = 2,188,523,165.21
  5. Step 5: Solve for x
    x = 2,188,523,165.21/72,669.34
  6. Step 6: Final answer
    x = 30,116.18

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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.