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Finding the Fourth Proportional to 40,590.30, 55,978.35 and 25,484.37

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Solution

The fourth proportional to 40,590.30, 55,978.35 and 25,484.37 is: 35,145.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,590.30 : 55,978.35 = 25,484.37 : x
  2. Step 2: Convert to fraction form
    40,590.30/55,978.35 = 25,484.37/x
  3. Step 3: Cross multiply
    40,590.30x = 55,978.35 × 25,484.37
  4. Step 4: Simplify right side
    40,590.30x = 1,426,572,983.39
  5. Step 5: Solve for x
    x = 1,426,572,983.39/40,590.30
  6. Step 6: Final answer
    x = 35,145.66

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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.