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Finding the Fourth Proportional to 55,154.80, 82,732.20 and 42,713.20

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Solution

The fourth proportional to 55,154.80, 82,732.20 and 42,713.20 is: 64,069.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,154.80 : 82,732.20 = 42,713.20 : x
  2. Step 2: Convert to fraction form
    55,154.80/82,732.20 = 42,713.20/x
  3. Step 3: Cross multiply
    55,154.80x = 82,732.20 × 42,713.20
  4. Step 4: Simplify right side
    55,154.80x = 3,533,757,005.04
  5. Step 5: Solve for x
    x = 3,533,757,005.04/55,154.80
  6. Step 6: Final answer
    x = 64,069.80

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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.