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Finding the Fourth Proportional to 58,845.50, 81,206.89 and 31,987.92

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Solution

The fourth proportional to 58,845.50, 81,206.89 and 31,987.92 is: 44,143.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,845.50 : 81,206.89 = 31,987.92 : x
  2. Step 2: Convert to fraction form
    58,845.50/81,206.89 = 31,987.92/x
  3. Step 3: Cross multiply
    58,845.50x = 81,206.89 × 31,987.92
  4. Step 4: Simplify right side
    58,845.50x = 2,597,639,725.32
  5. Step 5: Solve for x
    x = 2,597,639,725.32/58,845.50
  6. Step 6: Final answer
    x = 44,143.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.