Home / 78,265,753.05-107,982,518.34-45,213,942.54

Finding the Fourth Proportional to 78,265,753.05, 107,982,518.34 and 45,213,942.54

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Solution

The fourth proportional to 78,265,753.05, 107,982,518.34 and 45,213,942.54 is: 62,381,248.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,265,753.05 : 107,982,518.34 = 45,213,942.54 : x
  2. Step 2: Convert to fraction form
    78,265,753.05/107,982,518.34 = 45,213,942.54/x
  3. Step 3: Cross multiply
    78,265,753.05x = 107,982,518.34 × 45,213,942.54
  4. Step 4: Simplify right side
    78,265,753.05x = 4,882,315,379,549,256
  5. Step 5: Solve for x
    x = 4,882,315,379,549,256/78,265,753.05
  6. Step 6: Final answer
    x = 62,381,248.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.