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Finding the Fourth Proportional to 51,182.70, 76,664.70 and 42,434.70

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Solution

The fourth proportional to 51,182.70, 76,664.70 and 42,434.70 is: 63,561.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,182.70 : 76,664.70 = 42,434.70 : x
  2. Step 2: Convert to fraction form
    51,182.70/76,664.70 = 42,434.70/x
  3. Step 3: Cross multiply
    51,182.70x = 76,664.70 × 42,434.70
  4. Step 4: Simplify right side
    51,182.70x = 3,253,243,545.09
  5. Step 5: Solve for x
    x = 3,253,243,545.09/51,182.70
  6. Step 6: Final answer
    x = 63,561.39

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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.