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Finding the Fourth Proportional to 55,627.40, 83,449.20 and 18,178.40

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Solution

The fourth proportional to 55,627.40, 83,449.20 and 18,178.40 is: 27,270.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,627.40 : 83,449.20 = 18,178.40 : x
  2. Step 2: Convert to fraction form
    55,627.40/83,449.20 = 18,178.40/x
  3. Step 3: Cross multiply
    55,627.40x = 83,449.20 × 18,178.40
  4. Step 4: Simplify right side
    55,627.40x = 1,516,972,937.28
  5. Step 5: Solve for x
    x = 1,516,972,937.28/55,627.40
  6. Step 6: Final answer
    x = 27,270.25

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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.