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Finding the Fourth Proportional to 87,833.60, 131,836.80 and 43,510.40

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Solution

The fourth proportional to 87,833.60, 131,836.80 and 43,510.40 is: 65,308.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,833.60 : 131,836.80 = 43,510.40 : x
  2. Step 2: Convert to fraction form
    87,833.60/131,836.80 = 43,510.40/x
  3. Step 3: Cross multiply
    87,833.60x = 131,836.80 × 43,510.40
  4. Step 4: Simplify right side
    87,833.60x = 5,736,271,902.72
  5. Step 5: Solve for x
    x = 5,736,271,902.72/87,833.60
  6. Step 6: Final answer
    x = 65,308.40

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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.