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Finding the Fourth Proportional to 52,790.40, 79,185.60 and 49,291.20

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Solution

The fourth proportional to 52,790.40, 79,185.60 and 49,291.20 is: 73,936.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,790.40 : 79,185.60 = 49,291.20 : x
  2. Step 2: Convert to fraction form
    52,790.40/79,185.60 = 49,291.20/x
  3. Step 3: Cross multiply
    52,790.40x = 79,185.60 × 49,291.20
  4. Step 4: Simplify right side
    52,790.40x = 3,903,153,246.72
  5. Step 5: Solve for x
    x = 3,903,153,246.72/52,790.40
  6. Step 6: Final answer
    x = 73,936.80

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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.