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Finding the Fourth Proportional to 73,070, 109,610.40 and 53,472.32

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Solution

The fourth proportional to 73,070, 109,610.40 and 53,472.32 is: 80,212.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,070 : 109,610.40 = 53,472.32 : x
  2. Step 2: Convert to fraction form
    73,070/109,610.40 = 53,472.32/x
  3. Step 3: Cross multiply
    73,070x = 109,610.40 × 53,472.32
  4. Step 4: Simplify right side
    73,070x = 5,861,122,384.13
  5. Step 5: Solve for x
    x = 5,861,122,384.13/73,070
  6. Step 6: Final answer
    x = 80,212.43

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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.