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Finding the Fourth Proportional to 53,274.40, 79,911.60 and 52,399.60

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Solution

The fourth proportional to 53,274.40, 79,911.60 and 52,399.60 is: 78,599.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,274.40 : 79,911.60 = 52,399.60 : x
  2. Step 2: Convert to fraction form
    53,274.40/79,911.60 = 52,399.60/x
  3. Step 3: Cross multiply
    53,274.40x = 79,911.60 × 52,399.60
  4. Step 4: Simplify right side
    53,274.40x = 4,187,335,875.36
  5. Step 5: Solve for x
    x = 4,187,335,875.36/53,274.40
  6. Step 6: Final answer
    x = 78,599.40

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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.