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Finding the Fourth Proportional to 52,408.80, 78,609.60 and 16,869.60

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Solution

The fourth proportional to 52,408.80, 78,609.60 and 16,869.60 is: 25,303.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,408.80 : 78,609.60 = 16,869.60 : x
  2. Step 2: Convert to fraction form
    52,408.80/78,609.60 = 16,869.60/x
  3. Step 3: Cross multiply
    52,408.80x = 78,609.60 × 16,869.60
  4. Step 4: Simplify right side
    52,408.80x = 1,326,112,508.16
  5. Step 5: Solve for x
    x = 1,326,112,508.16/52,408.80
  6. Step 6: Final answer
    x = 25,303.24

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1.5x scale

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.