Home / 55,178.08-82,766.40-20,118.40

Finding the Fourth Proportional to 55,178.08, 82,766.40 and 20,118.40

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Solution

The fourth proportional to 55,178.08, 82,766.40 and 20,118.40 is: 30,177.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,178.08 : 82,766.40 = 20,118.40 : x
  2. Step 2: Convert to fraction form
    55,178.08/82,766.40 = 20,118.40/x
  3. Step 3: Cross multiply
    55,178.08x = 82,766.40 × 20,118.40
  4. Step 4: Simplify right side
    55,178.08x = 1,665,127,541.76
  5. Step 5: Solve for x
    x = 1,665,127,541.76/55,178.08
  6. Step 6: Final answer
    x = 30,177.34

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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.