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Finding the Fourth Proportional to 55,964.60, 83,937.30 and 20,886.20

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Solution

The fourth proportional to 55,964.60, 83,937.30 and 20,886.20 is: 31,325.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,964.60 : 83,937.30 = 20,886.20 : x
  2. Step 2: Convert to fraction form
    55,964.60/83,937.30 = 20,886.20/x
  3. Step 3: Cross multiply
    55,964.60x = 83,937.30 × 20,886.20
  4. Step 4: Simplify right side
    55,964.60x = 1,753,131,235.26
  5. Step 5: Solve for x
    x = 1,753,131,235.26/55,964.60
  6. Step 6: Final answer
    x = 31,325.72

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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.