Home / 51,911.12-77,871-31,265.84

Finding the Fourth Proportional to 51,911.12, 77,871 and 31,265.84

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Solution

The fourth proportional to 51,911.12, 77,871 and 31,265.84 is: 46,901.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,911.12 : 77,871 = 31,265.84 : x
  2. Step 2: Convert to fraction form
    51,911.12/77,871 = 31,265.84/x
  3. Step 3: Cross multiply
    51,911.12x = 77,871 × 31,265.84
  4. Step 4: Simplify right side
    51,911.12x = 2,434,702,226.64
  5. Step 5: Solve for x
    x = 2,434,702,226.64/51,911.12
  6. Step 6: Final answer
    x = 46,901.36

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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.