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Finding the Fourth Proportional to 70,546.80, 105,820.20 and 54,976.08

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Solution

The fourth proportional to 70,546.80, 105,820.20 and 54,976.08 is: 82,464.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,546.80 : 105,820.20 = 54,976.08 : x
  2. Step 2: Convert to fraction form
    70,546.80/105,820.20 = 54,976.08/x
  3. Step 3: Cross multiply
    70,546.80x = 105,820.20 × 54,976.08
  4. Step 4: Simplify right side
    70,546.80x = 5,817,579,780.82
  5. Step 5: Solve for x
    x = 5,817,579,780.82/70,546.80
  6. Step 6: Final answer
    x = 82,464.12

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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.