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Finding the Fourth Proportional to 56,725, 84,938.86 and 39,994.48

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Solution

The fourth proportional to 56,725, 84,938.86 and 39,994.48 is: 59,886.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,725 : 84,938.86 = 39,994.48 : x
  2. Step 2: Convert to fraction form
    56,725/84,938.86 = 39,994.48/x
  3. Step 3: Cross multiply
    56,725x = 84,938.86 × 39,994.48
  4. Step 4: Simplify right side
    56,725x = 3,397,085,537.49
  5. Step 5: Solve for x
    x = 3,397,085,537.49/56,725
  6. Step 6: Final answer
    x = 59,886.92

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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.