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Finding the Fourth Proportional to 72,859,900.80, 109,415,822.40 and 38,847,676.80

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Solution

The fourth proportional to 72,859,900.80, 109,415,822.40 and 38,847,676.80 is: 58,338,680.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,859,900.80 : 109,415,822.40 = 38,847,676.80 : x
  2. Step 2: Convert to fraction form
    72,859,900.80/109,415,822.40 = 38,847,676.80/x
  3. Step 3: Cross multiply
    72,859,900.80x = 109,415,822.40 × 38,847,676.80
  4. Step 4: Simplify right side
    72,859,900.80x = 4,250,550,505,401,400
  5. Step 5: Solve for x
    x = 4,250,550,505,401,400/72,859,900.80
  6. Step 6: Final answer
    x = 58,338,680.93

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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.