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Finding the Fourth Proportional to 86,702.80, 130,067.88 and 36,783.04

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Solution

The fourth proportional to 86,702.80, 130,067.88 and 36,783.04 is: 55,180.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,702.80 : 130,067.88 = 36,783.04 : x
  2. Step 2: Convert to fraction form
    86,702.80/130,067.88 = 36,783.04/x
  3. Step 3: Cross multiply
    86,702.80x = 130,067.88 × 36,783.04
  4. Step 4: Simplify right side
    86,702.80x = 4,784,292,032.76
  5. Step 5: Solve for x
    x = 4,784,292,032.76/86,702.80
  6. Step 6: Final answer
    x = 55,180.36

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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.