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Finding the Fourth Proportional to 40,956.40, 61,319.40 and 36,809.20

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Solution

The fourth proportional to 40,956.40, 61,319.40 and 36,809.20 is: 55,110.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,956.40 : 61,319.40 = 36,809.20 : x
  2. Step 2: Convert to fraction form
    40,956.40/61,319.40 = 36,809.20/x
  3. Step 3: Cross multiply
    40,956.40x = 61,319.40 × 36,809.20
  4. Step 4: Simplify right side
    40,956.40x = 2,257,118,058.48
  5. Step 5: Solve for x
    x = 2,257,118,058.48/40,956.40
  6. Step 6: Final answer
    x = 55,110.27

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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.