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Finding the Fourth Proportional to 51,341.45, 76,979.22 and 21,376.45

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Solution

The fourth proportional to 51,341.45, 76,979.22 and 21,376.45 is: 32,050.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,341.45 : 76,979.22 = 21,376.45 : x
  2. Step 2: Convert to fraction form
    51,341.45/76,979.22 = 21,376.45/x
  3. Step 3: Cross multiply
    51,341.45x = 76,979.22 × 21,376.45
  4. Step 4: Simplify right side
    51,341.45x = 1,645,542,254.92
  5. Step 5: Solve for x
    x = 1,645,542,254.92/51,341.45
  6. Step 6: Final answer
    x = 32,050.95

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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.