Home / 78,101,440.45-117,069,562.43-28,885,665.14

Finding the Fourth Proportional to 78,101,440.45, 117,069,562.43 and 28,885,665.14

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Solution

The fourth proportional to 78,101,440.45, 117,069,562.43 and 28,885,665.14 is: 43,297,948.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,101,440.45 : 117,069,562.43 = 28,885,665.14 : x
  2. Step 2: Convert to fraction form
    78,101,440.45/117,069,562.43 = 28,885,665.14/x
  3. Step 3: Cross multiply
    78,101,440.45x = 117,069,562.43 × 28,885,665.14
  4. Step 4: Simplify right side
    78,101,440.45x = 3,381,632,178,419,487
  5. Step 5: Solve for x
    x = 3,381,632,178,419,487/78,101,440.45
  6. Step 6: Final answer
    x = 43,297,948.91

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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.