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Finding the Fourth Proportional to 53,493.60, 80,163.60 and 39,343.20

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Solution

The fourth proportional to 53,493.60, 80,163.60 and 39,343.20 is: 58,958.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,493.60 : 80,163.60 = 39,343.20 : x
  2. Step 2: Convert to fraction form
    53,493.60/80,163.60 = 39,343.20/x
  3. Step 3: Cross multiply
    53,493.60x = 80,163.60 × 39,343.20
  4. Step 4: Simplify right side
    53,493.60x = 3,153,892,547.52
  5. Step 5: Solve for x
    x = 3,153,892,547.52/53,493.60
  6. Step 6: Final answer
    x = 58,958.32

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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.