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Finding the Fourth Proportional to 73,886.80, 110,830.20 and 51,725.20

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Solution

The fourth proportional to 73,886.80, 110,830.20 and 51,725.20 is: 77,587.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,886.80 : 110,830.20 = 51,725.20 : x
  2. Step 2: Convert to fraction form
    73,886.80/110,830.20 = 51,725.20/x
  3. Step 3: Cross multiply
    73,886.80x = 110,830.20 × 51,725.20
  4. Step 4: Simplify right side
    73,886.80x = 5,732,714,261.04
  5. Step 5: Solve for x
    x = 5,732,714,261.04/73,886.80
  6. Step 6: Final answer
    x = 77,587.80

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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.