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Finding the Fourth Proportional to 86,702.40, 119,662.92 and 62,820.36

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Solution

The fourth proportional to 86,702.40, 119,662.92 and 62,820.36 is: 86,701.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,702.40 : 119,662.92 = 62,820.36 : x
  2. Step 2: Convert to fraction form
    86,702.40/119,662.92 = 62,820.36/x
  3. Step 3: Cross multiply
    86,702.40x = 119,662.92 × 62,820.36
  4. Step 4: Simplify right side
    86,702.40x = 7,517,267,713.05
  5. Step 5: Solve for x
    x = 7,517,267,713.05/86,702.40
  6. Step 6: Final answer
    x = 86,701.96

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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.