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Finding the Fourth Proportional to 86,935.82, 130,469.40 and 63,622.40

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Solution

The fourth proportional to 86,935.82, 130,469.40 and 63,622.40 is: 95,481.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,935.82 : 130,469.40 = 63,622.40 : x
  2. Step 2: Convert to fraction form
    86,935.82/130,469.40 = 63,622.40/x
  3. Step 3: Cross multiply
    86,935.82x = 130,469.40 × 63,622.40
  4. Step 4: Simplify right side
    86,935.82x = 8,300,775,702.21
  5. Step 5: Solve for x
    x = 8,300,775,702.21/86,935.82
  6. Step 6: Final answer
    x = 95,481.66

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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.