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Finding the Fourth Proportional to 86,702.59, 129,947.37 and 49,293.96

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Solution

The fourth proportional to 86,702.59, 129,947.37 and 49,293.96 is: 73,880.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,702.59 : 129,947.37 = 49,293.96 : x
  2. Step 2: Convert to fraction form
    86,702.59/129,947.37 = 49,293.96/x
  3. Step 3: Cross multiply
    86,702.59x = 129,947.37 × 49,293.96
  4. Step 4: Simplify right side
    86,702.59x = 6,405,620,458.89
  5. Step 5: Solve for x
    x = 6,405,620,458.89/86,702.59
  6. Step 6: Final answer
    x = 73,880.38

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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.