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Finding the Fourth Proportional to 87,216.40, 130,843.20 and 49,794.40

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Solution

The fourth proportional to 87,216.40, 130,843.20 and 49,794.40 is: 74,702.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,216.40 : 130,843.20 = 49,794.40 : x
  2. Step 2: Convert to fraction form
    87,216.40/130,843.20 = 49,794.40/x
  3. Step 3: Cross multiply
    87,216.40x = 130,843.20 × 49,794.40
  4. Step 4: Simplify right side
    87,216.40x = 6,515,258,638.08
  5. Step 5: Solve for x
    x = 6,515,258,638.08/87,216.40
  6. Step 6: Final answer
    x = 74,702.22

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1.5x scale

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.