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Finding the Fourth Proportional to 79,261,721.40, 110,739,661.80 and 79,261,721.40

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Solution

The fourth proportional to 79,261,721.40, 110,739,661.80 and 79,261,721.40 is: 110,739,661.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,261,721.40 : 110,739,661.80 = 79,261,721.40 : x
  2. Step 2: Convert to fraction form
    79,261,721.40/110,739,661.80 = 79,261,721.40/x
  3. Step 3: Cross multiply
    79,261,721.40x = 110,739,661.80 × 79,261,721.40
  4. Step 4: Simplify right side
    79,261,721.40x = 8,777,416,221,521,823
  5. Step 5: Solve for x
    x = 8,777,416,221,521,823/79,261,721.40
  6. Step 6: Final answer
    x = 110,739,661.80

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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.