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Finding the Fourth Proportional to 115,581, 173,421.58 and 40,754.59

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Solution

The fourth proportional to 115,581, 173,421.58 and 40,754.59 is: 61,149.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,581 : 173,421.58 = 40,754.59 : x
  2. Step 2: Convert to fraction form
    115,581/173,421.58 = 40,754.59/x
  3. Step 3: Cross multiply
    115,581x = 173,421.58 × 40,754.59
  4. Step 4: Simplify right side
    115,581x = 7,067,725,390.05
  5. Step 5: Solve for x
    x = 7,067,725,390.05/115,581
  6. Step 6: Final answer
    x = 61,149.54

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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.