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Finding the Fourth Proportional to 80,103,985.30, 112,400,671.10 and 80,103,985.30

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Solution

The fourth proportional to 80,103,985.30, 112,400,671.10 and 80,103,985.30 is: 112,400,671.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,103,985.30 : 112,400,671.10 = 80,103,985.30 : x
  2. Step 2: Convert to fraction form
    80,103,985.30/112,400,671.10 = 80,103,985.30/x
  3. Step 3: Cross multiply
    80,103,985.30x = 112,400,671.10 × 80,103,985.30
  4. Step 4: Simplify right side
    80,103,985.30x = 9,003,741,705,504,534
  5. Step 5: Solve for x
    x = 9,003,741,705,504,534/80,103,985.30
  6. Step 6: Final answer
    x = 112,400,671.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.