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Finding the Fourth Proportional to 65,004.20, 97,311.90 and 61,159.40

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Solution

The fourth proportional to 65,004.20, 97,311.90 and 61,159.40 is: 91,556.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,004.20 : 97,311.90 = 61,159.40 : x
  2. Step 2: Convert to fraction form
    65,004.20/97,311.90 = 61,159.40/x
  3. Step 3: Cross multiply
    65,004.20x = 97,311.90 × 61,159.40
  4. Step 4: Simplify right side
    65,004.20x = 5,951,537,416.86
  5. Step 5: Solve for x
    x = 5,951,537,416.86/65,004.20
  6. Step 6: Final answer
    x = 91,556.20

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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.