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Finding the Fourth Proportional to 52,657.22, 72,668.02 and 28,784.90

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Solution

The fourth proportional to 52,657.22, 72,668.02 and 28,784.90 is: 39,723.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,657.22 : 72,668.02 = 28,784.90 : x
  2. Step 2: Convert to fraction form
    52,657.22/72,668.02 = 28,784.90/x
  3. Step 3: Cross multiply
    52,657.22x = 72,668.02 × 28,784.90
  4. Step 4: Simplify right side
    52,657.22x = 2,091,741,688.90
  5. Step 5: Solve for x
    x = 2,091,741,688.90/52,657.22
  6. Step 6: Final answer
    x = 39,723.74

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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.