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Finding the Fourth Proportional to 70,968.53, 106,452.81 and 28,871.52

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Solution

The fourth proportional to 70,968.53, 106,452.81 and 28,871.52 is: 43,307.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,968.53 : 106,452.81 = 28,871.52 : x
  2. Step 2: Convert to fraction form
    70,968.53/106,452.81 = 28,871.52/x
  3. Step 3: Cross multiply
    70,968.53x = 106,452.81 × 28,871.52
  4. Step 4: Simplify right side
    70,968.53x = 3,073,454,432.97
  5. Step 5: Solve for x
    x = 3,073,454,432.97/70,968.53
  6. Step 6: Final answer
    x = 43,307.29

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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.