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Finding the Fourth Proportional to 65,043.60, 97,419.60 and 53,379.60

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Solution

The fourth proportional to 65,043.60, 97,419.60 and 53,379.60 is: 79,949.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,043.60 : 97,419.60 = 53,379.60 : x
  2. Step 2: Convert to fraction form
    65,043.60/97,419.60 = 53,379.60/x
  3. Step 3: Cross multiply
    65,043.60x = 97,419.60 × 53,379.60
  4. Step 4: Simplify right side
    65,043.60x = 5,200,219,280.16
  5. Step 5: Solve for x
    x = 5,200,219,280.16/65,043.60
  6. Step 6: Final answer
    x = 79,949.75

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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.