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Finding the Fourth Proportional to 55,082, 82,622.80 and 15,639.12

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Solution

The fourth proportional to 55,082, 82,622.80 and 15,639.12 is: 23,458.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,082 : 82,622.80 = 15,639.12 : x
  2. Step 2: Convert to fraction form
    55,082/82,622.80 = 15,639.12/x
  3. Step 3: Cross multiply
    55,082x = 82,622.80 × 15,639.12
  4. Step 4: Simplify right side
    55,082x = 1,292,147,883.94
  5. Step 5: Solve for x
    x = 1,292,147,883.94/55,082
  6. Step 6: Final answer
    x = 23,458.62

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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.