Home / 81,408,031.80-122,112,047.70-49,159,404.60

Finding the Fourth Proportional to 81,408,031.80, 122,112,047.70 and 49,159,404.60

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Solution

The fourth proportional to 81,408,031.80, 122,112,047.70 and 49,159,404.60 is: 73,739,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,408,031.80 : 122,112,047.70 = 49,159,404.60 : x
  2. Step 2: Convert to fraction form
    81,408,031.80/122,112,047.70 = 49,159,404.60/x
  3. Step 3: Cross multiply
    81,408,031.80x = 122,112,047.70 × 49,159,404.60
  4. Step 4: Simplify right side
    81,408,031.80x = 6,002,955,559,418,800
  5. Step 5: Solve for x
    x = 6,002,955,559,418,800/81,408,031.80
  6. Step 6: Final answer
    x = 73,739,106.90

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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.