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Finding the Fourth Proportional to 115,878.50, 159,912.33 and 62,886.50

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Solution

The fourth proportional to 115,878.50, 159,912.33 and 62,886.50 is: 86,783.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,878.50 : 159,912.33 = 62,886.50 : x
  2. Step 2: Convert to fraction form
    115,878.50/159,912.33 = 62,886.50/x
  3. Step 3: Cross multiply
    115,878.50x = 159,912.33 × 62,886.50
  4. Step 4: Simplify right side
    115,878.50x = 10,056,326,740.55
  5. Step 5: Solve for x
    x = 10,056,326,740.55/115,878.50
  6. Step 6: Final answer
    x = 86,783.37

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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.