Home / 70,517.12-105,771.36-28,963.04

Finding the Fourth Proportional to 70,517.12, 105,771.36 and 28,963.04

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Solution

The fourth proportional to 70,517.12, 105,771.36 and 28,963.04 is: 43,442.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,517.12 : 105,771.36 = 28,963.04 : x
  2. Step 2: Convert to fraction form
    70,517.12/105,771.36 = 28,963.04/x
  3. Step 3: Cross multiply
    70,517.12x = 105,771.36 × 28,963.04
  4. Step 4: Simplify right side
    70,517.12x = 3,063,460,130.53
  5. Step 5: Solve for x
    x = 3,063,460,130.53/70,517.12
  6. Step 6: Final answer
    x = 43,442.79

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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.