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Finding the Fourth Proportional to 56,661.58, 84,893.92 and 39,758.80

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Solution

The fourth proportional to 56,661.58, 84,893.92 and 39,758.80 is: 59,569.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,661.58 : 84,893.92 = 39,758.80 : x
  2. Step 2: Convert to fraction form
    56,661.58/84,893.92 = 39,758.80/x
  3. Step 3: Cross multiply
    56,661.58x = 84,893.92 × 39,758.80
  4. Step 4: Simplify right side
    56,661.58x = 3,375,280,457.68
  5. Step 5: Solve for x
    x = 3,375,280,457.68/56,661.58
  6. Step 6: Final answer
    x = 59,569.12

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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.