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Finding the Fourth Proportional to 107,693.60, 161,528.11 and 28,813.91

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Solution

The fourth proportional to 107,693.60, 161,528.11 and 28,813.91 is: 43,217.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,693.60 : 161,528.11 = 28,813.91 : x
  2. Step 2: Convert to fraction form
    107,693.60/161,528.11 = 28,813.91/x
  3. Step 3: Cross multiply
    107,693.60x = 161,528.11 × 28,813.91
  4. Step 4: Simplify right side
    107,693.60x = 4,654,256,020.19
  5. Step 5: Solve for x
    x = 4,654,256,020.19/107,693.60
  6. Step 6: Final answer
    x = 43,217.57

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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.