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Finding the Fourth Proportional to 51,429.60, 77,061.60 and 29,176.80

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Solution

The fourth proportional to 51,429.60, 77,061.60 and 29,176.80 is: 43,718.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,429.60 : 77,061.60 = 29,176.80 : x
  2. Step 2: Convert to fraction form
    51,429.60/77,061.60 = 29,176.80/x
  3. Step 3: Cross multiply
    51,429.60x = 77,061.60 × 29,176.80
  4. Step 4: Simplify right side
    51,429.60x = 2,248,410,890.88
  5. Step 5: Solve for x
    x = 2,248,410,890.88/51,429.60
  6. Step 6: Final answer
    x = 43,718.23

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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.