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Finding the Fourth Proportional to 51,156.80, 76,745.66 and 21,574.66

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Solution

The fourth proportional to 51,156.80, 76,745.66 and 21,574.66 is: 32,366.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,156.80 : 76,745.66 = 21,574.66 : x
  2. Step 2: Convert to fraction form
    51,156.80/76,745.66 = 21,574.66/x
  3. Step 3: Cross multiply
    51,156.80x = 76,745.66 × 21,574.66
  4. Step 4: Simplify right side
    51,156.80x = 1,655,761,520.98
  5. Step 5: Solve for x
    x = 1,655,761,520.98/51,156.80
  6. Step 6: Final answer
    x = 32,366.40

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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.