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Finding the Fourth Proportional to 52,405.56, 72,321.18 and 28,532.64

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Solution

The fourth proportional to 52,405.56, 72,321.18 and 28,532.64 is: 39,375.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,405.56 : 72,321.18 = 28,532.64 : x
  2. Step 2: Convert to fraction form
    52,405.56/72,321.18 = 28,532.64/x
  3. Step 3: Cross multiply
    52,405.56x = 72,321.18 × 28,532.64
  4. Step 4: Simplify right side
    52,405.56x = 2,063,513,831.71
  5. Step 5: Solve for x
    x = 2,063,513,831.71/52,405.56
  6. Step 6: Final answer
    x = 39,375.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.