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Finding the Fourth Proportional to 64,986.60, 97,350.30 and 45,287.40

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Solution

The fourth proportional to 64,986.60, 97,350.30 and 45,287.40 is: 67,840.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,986.60 : 97,350.30 = 45,287.40 : x
  2. Step 2: Convert to fraction form
    64,986.60/97,350.30 = 45,287.40/x
  3. Step 3: Cross multiply
    64,986.60x = 97,350.30 × 45,287.40
  4. Step 4: Simplify right side
    64,986.60x = 4,408,741,976.22
  5. Step 5: Solve for x
    x = 4,408,741,976.22/64,986.60
  6. Step 6: Final answer
    x = 67,840.79

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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.