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Finding the Fourth Proportional to 56,998, 85,498.74 and 19,557.54

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Solution

The fourth proportional to 56,998, 85,498.74 and 19,557.54 is: 29,336.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,998 : 85,498.74 = 19,557.54 : x
  2. Step 2: Convert to fraction form
    56,998/85,498.74 = 19,557.54/x
  3. Step 3: Cross multiply
    56,998x = 85,498.74 × 19,557.54
  4. Step 4: Simplify right side
    56,998x = 1,672,145,027.50
  5. Step 5: Solve for x
    x = 1,672,145,027.50/56,998
  6. Step 6: Final answer
    x = 29,336.91

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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.