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Finding the Fourth Proportional to 35,257.50, 48,656.79 and 20,353.50

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Solution

The fourth proportional to 35,257.50, 48,656.79 and 20,353.50 is: 28,088.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,257.50 : 48,656.79 = 20,353.50 : x
  2. Step 2: Convert to fraction form
    35,257.50/48,656.79 = 20,353.50/x
  3. Step 3: Cross multiply
    35,257.50x = 48,656.79 × 20,353.50
  4. Step 4: Simplify right side
    35,257.50x = 990,335,975.27
  5. Step 5: Solve for x
    x = 990,335,975.27/35,257.50
  6. Step 6: Final answer
    x = 28,088.66

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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.