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Finding the Fourth Proportional to 55,310.40, 82,950.72 and 20,250.24

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Solution

The fourth proportional to 55,310.40, 82,950.72 and 20,250.24 is: 30,369.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,310.40 : 82,950.72 = 20,250.24 : x
  2. Step 2: Convert to fraction form
    55,310.40/82,950.72 = 20,250.24/x
  3. Step 3: Cross multiply
    55,310.40x = 82,950.72 × 20,250.24
  4. Step 4: Simplify right side
    55,310.40x = 1,679,771,988.17
  5. Step 5: Solve for x
    x = 1,679,771,988.17/55,310.40
  6. Step 6: Final answer
    x = 30,369.91

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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.