Home / 71,856,282.40-107,784,423.60-20,739,968.80

Finding the Fourth Proportional to 71,856,282.40, 107,784,423.60 and 20,739,968.80

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Solution

The fourth proportional to 71,856,282.40, 107,784,423.60 and 20,739,968.80 is: 31,109,953.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,856,282.40 : 107,784,423.60 = 20,739,968.80 : x
  2. Step 2: Convert to fraction form
    71,856,282.40/107,784,423.60 = 20,739,968.80/x
  3. Step 3: Cross multiply
    71,856,282.40x = 107,784,423.60 × 20,739,968.80
  4. Step 4: Simplify right side
    71,856,282.40x = 2,235,445,582,589,983.75
  5. Step 5: Solve for x
    x = 2,235,445,582,589,983.75/71,856,282.40
  6. Step 6: Final answer
    x = 31,109,953.20

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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.