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Finding the Fourth Proportional to 79,231,643.70, 111,125,855.10 and 79,231,643.70

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Solution

The fourth proportional to 79,231,643.70, 111,125,855.10 and 79,231,643.70 is: 111,125,855.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,231,643.70 : 111,125,855.10 = 79,231,643.70 : x
  2. Step 2: Convert to fraction form
    79,231,643.70/111,125,855.10 = 79,231,643.70/x
  3. Step 3: Cross multiply
    79,231,643.70x = 111,125,855.10 × 79,231,643.70
  4. Step 4: Simplify right side
    79,231,643.70x = 8,804,684,157,141,028
  5. Step 5: Solve for x
    x = 8,804,684,157,141,028/79,231,643.70
  6. Step 6: Final answer
    x = 111,125,855.10

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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.