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Finding the Fourth Proportional to 115,880.50, 159,915.10 and 62,888.50

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Solution

The fourth proportional to 115,880.50, 159,915.10 and 62,888.50 is: 86,786.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,880.50 : 159,915.10 = 62,888.50 : x
  2. Step 2: Convert to fraction form
    115,880.50/159,915.10 = 62,888.50/x
  3. Step 3: Cross multiply
    115,880.50x = 159,915.10 × 62,888.50
  4. Step 4: Simplify right side
    115,880.50x = 10,056,820,766.35
  5. Step 5: Solve for x
    x = 10,056,820,766.35/115,880.50
  6. Step 6: Final answer
    x = 86,786.14

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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.