Home / 78,379,679.68-117,503,753.64-34,653,378.58

Finding the Fourth Proportional to 78,379,679.68, 117,503,753.64 and 34,653,378.58

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Solution

The fourth proportional to 78,379,679.68, 117,503,753.64 and 34,653,378.58 is: 51,950,991.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,379,679.68 : 117,503,753.64 = 34,653,378.58 : x
  2. Step 2: Convert to fraction form
    78,379,679.68/117,503,753.64 = 34,653,378.58/x
  3. Step 3: Cross multiply
    78,379,679.68x = 117,503,753.64 × 34,653,378.58
  4. Step 4: Simplify right side
    78,379,679.68x = 4,071,902,059,457,973
  5. Step 5: Solve for x
    x = 4,071,902,059,457,973/78,379,679.68
  6. Step 6: Final answer
    x = 51,950,991.33

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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.