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Finding the Fourth Proportional to 55,657.40, 83,494.20 and 18,208.40

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Solution

The fourth proportional to 55,657.40, 83,494.20 and 18,208.40 is: 27,315.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,657.40 : 83,494.20 = 18,208.40 : x
  2. Step 2: Convert to fraction form
    55,657.40/83,494.20 = 18,208.40/x
  3. Step 3: Cross multiply
    55,657.40x = 83,494.20 × 18,208.40
  4. Step 4: Simplify right side
    55,657.40x = 1,520,295,791.28
  5. Step 5: Solve for x
    x = 1,520,295,791.28/55,657.40
  6. Step 6: Final answer
    x = 27,315.25

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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.