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Finding the Fourth Proportional to 56,808.73, 78,537.77 and 42,636.97

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Solution

The fourth proportional to 56,808.73, 78,537.77 and 42,636.97 is: 58,945.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,808.73 : 78,537.77 = 42,636.97 : x
  2. Step 2: Convert to fraction form
    56,808.73/78,537.77 = 42,636.97/x
  3. Step 3: Cross multiply
    56,808.73x = 78,537.77 × 42,636.97
  4. Step 4: Simplify right side
    56,808.73x = 3,348,612,543.36
  5. Step 5: Solve for x
    x = 3,348,612,543.36/56,808.73
  6. Step 6: Final answer
    x = 58,945.39

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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.