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Finding the Fourth Proportional to 56,677.80, 85,013.10 and 19,237.80

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Solution

The fourth proportional to 56,677.80, 85,013.10 and 19,237.80 is: 28,855.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,677.80 : 85,013.10 = 19,237.80 : x
  2. Step 2: Convert to fraction form
    56,677.80/85,013.10 = 19,237.80/x
  3. Step 3: Cross multiply
    56,677.80x = 85,013.10 × 19,237.80
  4. Step 4: Simplify right side
    56,677.80x = 1,635,465,015.18
  5. Step 5: Solve for x
    x = 1,635,465,015.18/56,677.80
  6. Step 6: Final answer
    x = 28,855.48

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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.