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Finding the Fourth Proportional to 53,254.70, 79,905.76 and 28,288.68

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Solution

The fourth proportional to 53,254.70, 79,905.76 and 28,288.68 is: 42,445.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,254.70 : 79,905.76 = 28,288.68 : x
  2. Step 2: Convert to fraction form
    53,254.70/79,905.76 = 28,288.68/x
  3. Step 3: Cross multiply
    53,254.70x = 79,905.76 × 28,288.68
  4. Step 4: Simplify right side
    53,254.70x = 2,260,428,474.80
  5. Step 5: Solve for x
    x = 2,260,428,474.80/53,254.70
  6. Step 6: Final answer
    x = 42,445.61

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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.