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Finding the Fourth Proportional to 72,301.60, 108,452.40 and 64,938.70

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Solution

The fourth proportional to 72,301.60, 108,452.40 and 64,938.70 is: 97,408.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,301.60 : 108,452.40 = 64,938.70 : x
  2. Step 2: Convert to fraction form
    72,301.60/108,452.40 = 64,938.70/x
  3. Step 3: Cross multiply
    72,301.60x = 108,452.40 × 64,938.70
  4. Step 4: Simplify right side
    72,301.60x = 7,042,757,867.88
  5. Step 5: Solve for x
    x = 7,042,757,867.88/72,301.60
  6. Step 6: Final answer
    x = 97,408.05

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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.