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Finding the Fourth Proportional to 56,755.88, 85,186.28 and 28,695.68

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Solution

The fourth proportional to 56,755.88, 85,186.28 and 28,695.68 is: 43,070.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,755.88 : 85,186.28 = 28,695.68 : x
  2. Step 2: Convert to fraction form
    56,755.88/85,186.28 = 28,695.68/x
  3. Step 3: Cross multiply
    56,755.88x = 85,186.28 × 28,695.68
  4. Step 4: Simplify right side
    56,755.88x = 2,444,478,231.27
  5. Step 5: Solve for x
    x = 2,444,478,231.27/56,755.88
  6. Step 6: Final answer
    x = 43,070.04

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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.