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Finding the Fourth Proportional to 53,269.60, 79,904.40 and 49,813.60

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Solution

The fourth proportional to 53,269.60, 79,904.40 and 49,813.60 is: 74,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,269.60 : 79,904.40 = 49,813.60 : x
  2. Step 2: Convert to fraction form
    53,269.60/79,904.40 = 49,813.60/x
  3. Step 3: Cross multiply
    53,269.60x = 79,904.40 × 49,813.60
  4. Step 4: Simplify right side
    53,269.60x = 3,980,325,819.84
  5. Step 5: Solve for x
    x = 3,980,325,819.84/53,269.60
  6. Step 6: Final answer
    x = 74,720.40

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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.