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Finding the Fourth Proportional to 40,485, 55,867.68 and 22,579.86

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Solution

The fourth proportional to 40,485, 55,867.68 and 22,579.86 is: 31,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,485 : 55,867.68 = 22,579.86 : x
  2. Step 2: Convert to fraction form
    40,485/55,867.68 = 22,579.86/x
  3. Step 3: Cross multiply
    40,485x = 55,867.68 × 22,579.86
  4. Step 4: Simplify right side
    40,485x = 1,261,484,392.92
  5. Step 5: Solve for x
    x = 1,261,484,392.92/40,485
  6. Step 6: Final answer
    x = 31,159.30

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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.