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Finding the Fourth Proportional to 55,305.60, 82,958.40 and 15,859.20

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Solution

The fourth proportional to 55,305.60, 82,958.40 and 15,859.20 is: 23,788.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,305.60 : 82,958.40 = 15,859.20 : x
  2. Step 2: Convert to fraction form
    55,305.60/82,958.40 = 15,859.20/x
  3. Step 3: Cross multiply
    55,305.60x = 82,958.40 × 15,859.20
  4. Step 4: Simplify right side
    55,305.60x = 1,315,653,857.28
  5. Step 5: Solve for x
    x = 1,315,653,857.28/55,305.60
  6. Step 6: Final answer
    x = 23,788.80

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1.5x scale

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.