Home / 78,544,424,432.10-117,816,638,205.03-18,853,086,692.76

Finding the Fourth Proportional to 78,544,424,432.10, 117,816,638,205.03 and 18,853,086,692.76

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Solution

The fourth proportional to 78,544,424,432.10, 117,816,638,205.03 and 18,853,086,692.76 is: 28,279,630,412.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,544,424,432.10 : 117,816,638,205.03 = 18,853,086,692.76 : x
  2. Step 2: Convert to fraction form
    78,544,424,432.10/117,816,638,205.03 = 18,853,086,692.76/x
  3. Step 3: Cross multiply
    78,544,424,432.10x = 117,816,638,205.03 × 18,853,086,692.76
  4. Step 4: Simplify right side
    78,544,424,432.10x = 2,221,207,293,928,970,387,456
  5. Step 5: Solve for x
    x = 2,221,207,293,928,970,387,456/78,544,424,432.10
  6. Step 6: Final answer
    x = 28,279,630,412.84

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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.