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Finding the Fourth Proportional to 85,251.52, 117,603.92 and 56,998.72

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Solution

The fourth proportional to 85,251.52, 117,603.92 and 56,998.72 is: 78,629.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,251.52 : 117,603.92 = 56,998.72 : x
  2. Step 2: Convert to fraction form
    85,251.52/117,603.92 = 56,998.72/x
  3. Step 3: Cross multiply
    85,251.52x = 117,603.92 × 56,998.72
  4. Step 4: Simplify right side
    85,251.52x = 6,703,272,906.98
  5. Step 5: Solve for x
    x = 6,703,272,906.98/85,251.52
  6. Step 6: Final answer
    x = 78,629.37

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1.5x scale

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.