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Finding the Fourth Proportional to 40,590.78, 55,978.96 and 25,484.83

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Solution

The fourth proportional to 40,590.78, 55,978.96 and 25,484.83 is: 35,146.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,590.78 : 55,978.96 = 25,484.83 : x
  2. Step 2: Convert to fraction form
    40,590.78/55,978.96 = 25,484.83/x
  3. Step 3: Cross multiply
    40,590.78x = 55,978.96 × 25,484.83
  4. Step 4: Simplify right side
    40,590.78x = 1,426,614,279.18
  5. Step 5: Solve for x
    x = 1,426,614,279.18/40,590.78
  6. Step 6: Final answer
    x = 35,146.26

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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.