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Finding the Fourth Proportional to 64,712.39, 96,967.59 and 40,969.67

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Solution

The fourth proportional to 64,712.39, 96,967.59 and 40,969.67 is: 61,390.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,712.39 : 96,967.59 = 40,969.67 : x
  2. Step 2: Convert to fraction form
    64,712.39/96,967.59 = 40,969.67/x
  3. Step 3: Cross multiply
    64,712.39x = 96,967.59 × 40,969.67
  4. Step 4: Simplify right side
    64,712.39x = 3,972,730,163.00
  5. Step 5: Solve for x
    x = 3,972,730,163.00/64,712.39
  6. Step 6: Final answer
    x = 61,390.56

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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.