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Finding the Fourth Proportional to 107,873.47, 161,810.06 and 28,987.70

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Solution

The fourth proportional to 107,873.47, 161,810.06 and 28,987.70 is: 43,481.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,873.47 : 161,810.06 = 28,987.70 : x
  2. Step 2: Convert to fraction form
    107,873.47/161,810.06 = 28,987.70/x
  3. Step 3: Cross multiply
    107,873.47x = 161,810.06 × 28,987.70
  4. Step 4: Simplify right side
    107,873.47x = 4,690,501,237.76
  5. Step 5: Solve for x
    x = 4,690,501,237.76/107,873.47
  6. Step 6: Final answer
    x = 43,481.51

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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.