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Finding the Fourth Proportional to 53,907.40, 80,864.70 and 18,368.20

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Solution

The fourth proportional to 53,907.40, 80,864.70 and 18,368.20 is: 27,553.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,907.40 : 80,864.70 = 18,368.20 : x
  2. Step 2: Convert to fraction form
    53,907.40/80,864.70 = 18,368.20/x
  3. Step 3: Cross multiply
    53,907.40x = 80,864.70 × 18,368.20
  4. Step 4: Simplify right side
    53,907.40x = 1,485,338,982.54
  5. Step 5: Solve for x
    x = 1,485,338,982.54/53,907.40
  6. Step 6: Final answer
    x = 27,553.53

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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.