Home / 71,856,029.40-107,784,044.10-20,739,715.80

Finding the Fourth Proportional to 71,856,029.40, 107,784,044.10 and 20,739,715.80

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Solution

The fourth proportional to 71,856,029.40, 107,784,044.10 and 20,739,715.80 is: 31,109,573.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,856,029.40 : 107,784,044.10 = 20,739,715.80 : x
  2. Step 2: Convert to fraction form
    71,856,029.40/107,784,044.10 = 20,739,715.80/x
  3. Step 3: Cross multiply
    71,856,029.40x = 107,784,044.10 × 20,739,715.80
  4. Step 4: Simplify right side
    71,856,029.40x = 2,235,410,442,408,666.75
  5. Step 5: Solve for x
    x = 2,235,410,442,408,666.75/71,856,029.40
  6. Step 6: Final answer
    x = 31,109,573.70

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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.