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Finding the Fourth Proportional to 55,989.20, 83,983.80 and 20,924.30

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Solution

The fourth proportional to 55,989.20, 83,983.80 and 20,924.30 is: 31,386.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,989.20 : 83,983.80 = 20,924.30 : x
  2. Step 2: Convert to fraction form
    55,989.20/83,983.80 = 20,924.30/x
  3. Step 3: Cross multiply
    55,989.20x = 83,983.80 × 20,924.30
  4. Step 4: Simplify right side
    55,989.20x = 1,757,302,226.34
  5. Step 5: Solve for x
    x = 1,757,302,226.34/55,989.20
  6. Step 6: Final answer
    x = 31,386.45

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Similar ratio
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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.