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Finding the Fourth Proportional to 40,590.12, 55,978.11 and 25,484.21

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Solution

The fourth proportional to 40,590.12, 55,978.11 and 25,484.21 is: 35,145.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,590.12 : 55,978.11 = 25,484.21 : x
  2. Step 2: Convert to fraction form
    40,590.12/55,978.11 = 25,484.21/x
  3. Step 3: Cross multiply
    40,590.12x = 55,978.11 × 25,484.21
  4. Step 4: Simplify right side
    40,590.12x = 1,426,557,630.75
  5. Step 5: Solve for x
    x = 1,426,557,630.75/40,590.12
  6. Step 6: Final answer
    x = 35,145.44

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1.5x scale

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.