Home / 51,276.28-76,941.78-20,111.80

Finding the Fourth Proportional to 51,276.28, 76,941.78 and 20,111.80

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Solution

The fourth proportional to 51,276.28, 76,941.78 and 20,111.80 is: 30,178.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,276.28 : 76,941.78 = 20,111.80 : x
  2. Step 2: Convert to fraction form
    51,276.28/76,941.78 = 20,111.80/x
  3. Step 3: Cross multiply
    51,276.28x = 76,941.78 × 20,111.80
  4. Step 4: Simplify right side
    51,276.28x = 1,547,437,691.00
  5. Step 5: Solve for x
    x = 1,547,437,691.00/51,276.28
  6. Step 6: Final answer
    x = 30,178.43

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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.