Home / 71,856,218.90-107,784,328.35-20,739,905.30

Finding the Fourth Proportional to 71,856,218.90, 107,784,328.35 and 20,739,905.30

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Solution

The fourth proportional to 71,856,218.90, 107,784,328.35 and 20,739,905.30 is: 31,109,857.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,856,218.90 : 107,784,328.35 = 20,739,905.30 : x
  2. Step 2: Convert to fraction form
    71,856,218.90/107,784,328.35 = 20,739,905.30/x
  3. Step 3: Cross multiply
    71,856,218.90x = 107,784,328.35 × 20,739,905.30
  4. Step 4: Simplify right side
    71,856,218.90x = 2,235,436,762,803,105.25
  5. Step 5: Solve for x
    x = 2,235,436,762,803,105.25/71,856,218.90
  6. Step 6: Final answer
    x = 31,109,857.95

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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.