Home / 56,894,857.57-78,515,142.82-30,789,376.68

Finding the Fourth Proportional to 56,894,857.57, 78,515,142.82 and 30,789,376.68

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Solution

The fourth proportional to 56,894,857.57, 78,515,142.82 and 30,789,376.68 is: 42,489,469.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,894,857.57 : 78,515,142.82 = 30,789,376.68 : x
  2. Step 2: Convert to fraction form
    56,894,857.57/78,515,142.82 = 30,789,376.68/x
  3. Step 3: Cross multiply
    56,894,857.57x = 78,515,142.82 × 30,789,376.68
  4. Step 4: Simplify right side
    56,894,857.57x = 2,417,432,307,586,435.50
  5. Step 5: Solve for x
    x = 2,417,432,307,586,435.50/56,894,857.57
  6. Step 6: Final answer
    x = 42,489,469.36

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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.