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Finding the Fourth Proportional to 115,911.76, 159,950.46 and 64,225.39

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Solution

The fourth proportional to 115,911.76, 159,950.46 and 64,225.39 is: 88,626.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,911.76 : 159,950.46 = 64,225.39 : x
  2. Step 2: Convert to fraction form
    115,911.76/159,950.46 = 64,225.39/x
  3. Step 3: Cross multiply
    115,911.76x = 159,950.46 × 64,225.39
  4. Step 4: Simplify right side
    115,911.76x = 10,272,880,674.18
  5. Step 5: Solve for x
    x = 10,272,880,674.18/115,911.76
  6. Step 6: Final answer
    x = 88,626.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.