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Finding the Fourth Proportional to 53,809.20, 80,713.80 and 34,126.20

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Solution

The fourth proportional to 53,809.20, 80,713.80 and 34,126.20 is: 51,189.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,809.20 : 80,713.80 = 34,126.20 : x
  2. Step 2: Convert to fraction form
    53,809.20/80,713.80 = 34,126.20/x
  3. Step 3: Cross multiply
    53,809.20x = 80,713.80 × 34,126.20
  4. Step 4: Simplify right side
    53,809.20x = 2,754,455,281.56
  5. Step 5: Solve for x
    x = 2,754,455,281.56/53,809.20
  6. Step 6: Final answer
    x = 51,189.30

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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.