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Finding the Fourth Proportional to 106,585.07, 159,818.81 and 43,389

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Solution

The fourth proportional to 106,585.07, 159,818.81 and 43,389 is: 65,059.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,585.07 : 159,818.81 = 43,389 : x
  2. Step 2: Convert to fraction form
    106,585.07/159,818.81 = 43,389/x
  3. Step 3: Cross multiply
    106,585.07x = 159,818.81 × 43,389
  4. Step 4: Simplify right side
    106,585.07x = 6,934,378,130.15
  5. Step 5: Solve for x
    x = 6,934,378,130.15/106,585.07
  6. Step 6: Final answer
    x = 65,059.57

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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.