Home / 86,915.20-130,372.80-34,297.60

Finding the Fourth Proportional to 86,915.20, 130,372.80 and 34,297.60

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Solution

The fourth proportional to 86,915.20, 130,372.80 and 34,297.60 is: 51,446.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,915.20 : 130,372.80 = 34,297.60 : x
  2. Step 2: Convert to fraction form
    86,915.20/130,372.80 = 34,297.60/x
  3. Step 3: Cross multiply
    86,915.20x = 130,372.80 × 34,297.60
  4. Step 4: Simplify right side
    86,915.20x = 4,471,474,145.28
  5. Step 5: Solve for x
    x = 4,471,474,145.28/86,915.20
  6. Step 6: Final answer
    x = 51,446.40

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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.