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Finding the Fourth Proportional to 73,109.20, 109,793.40 and 56,509.60

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Solution

The fourth proportional to 73,109.20, 109,793.40 and 56,509.60 is: 84,864.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,109.20 : 109,793.40 = 56,509.60 : x
  2. Step 2: Convert to fraction form
    73,109.20/109,793.40 = 56,509.60/x
  3. Step 3: Cross multiply
    73,109.20x = 109,793.40 × 56,509.60
  4. Step 4: Simplify right side
    73,109.20x = 6,204,381,116.64
  5. Step 5: Solve for x
    x = 6,204,381,116.64/73,109.20
  6. Step 6: Final answer
    x = 84,864.57

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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.