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Finding the Fourth Proportional to 53,479.64, 80,142.92 and 30,056.87

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Solution

The fourth proportional to 53,479.64, 80,142.92 and 30,056.87 is: 45,042.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,479.64 : 80,142.92 = 30,056.87 : x
  2. Step 2: Convert to fraction form
    53,479.64/80,142.92 = 30,056.87/x
  3. Step 3: Cross multiply
    53,479.64x = 80,142.92 × 30,056.87
  4. Step 4: Simplify right side
    53,479.64x = 2,408,845,490.65
  5. Step 5: Solve for x
    x = 2,408,845,490.65/53,479.64
  6. Step 6: Final answer
    x = 45,042.29

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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.