Home / 76,541.28-114,818.52-21,137.28

Finding the Fourth Proportional to 76,541.28, 114,818.52 and 21,137.28

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Solution

The fourth proportional to 76,541.28, 114,818.52 and 21,137.28 is: 31,707.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,541.28 : 114,818.52 = 21,137.28 : x
  2. Step 2: Convert to fraction form
    76,541.28/114,818.52 = 21,137.28/x
  3. Step 3: Cross multiply
    76,541.28x = 114,818.52 × 21,137.28
  4. Step 4: Simplify right side
    76,541.28x = 2,426,951,206.43
  5. Step 5: Solve for x
    x = 2,426,951,206.43/76,541.28
  6. Step 6: Final answer
    x = 31,707.74

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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.