Home / 42,163.81-63,245.69-21,082.64

Finding the Fourth Proportional to 42,163.81, 63,245.69 and 21,082.64

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Solution

The fourth proportional to 42,163.81, 63,245.69 and 21,082.64 is: 31,623.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,163.81 : 63,245.69 = 21,082.64 : x
  2. Step 2: Convert to fraction form
    42,163.81/63,245.69 = 21,082.64/x
  3. Step 3: Cross multiply
    42,163.81x = 63,245.69 × 21,082.64
  4. Step 4: Simplify right side
    42,163.81x = 1,333,385,889.83
  5. Step 5: Solve for x
    x = 1,333,385,889.83/42,163.81
  6. Step 6: Final answer
    x = 31,623.94

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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.