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Finding the Fourth Proportional to 56,940.30, 85,410.45 and 51,410.70

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Solution

The fourth proportional to 56,940.30, 85,410.45 and 51,410.70 is: 77,116.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,940.30 : 85,410.45 = 51,410.70 : x
  2. Step 2: Convert to fraction form
    56,940.30/85,410.45 = 51,410.70/x
  3. Step 3: Cross multiply
    56,940.30x = 85,410.45 × 51,410.70
  4. Step 4: Simplify right side
    56,940.30x = 4,391,011,021.82
  5. Step 5: Solve for x
    x = 4,391,011,021.82/56,940.30
  6. Step 6: Final answer
    x = 77,116.05

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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.