Home / 83,880.30-115,797.69-64,717.02

Finding the Fourth Proportional to 83,880.30, 115,797.69 and 64,717.02

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Solution

The fourth proportional to 83,880.30, 115,797.69 and 64,717.02 is: 89,342.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,880.30 : 115,797.69 = 64,717.02 : x
  2. Step 2: Convert to fraction form
    83,880.30/115,797.69 = 64,717.02/x
  3. Step 3: Cross multiply
    83,880.30x = 115,797.69 × 64,717.02
  4. Step 4: Simplify right side
    83,880.30x = 7,494,081,419.68
  5. Step 5: Solve for x
    x = 7,494,081,419.68/83,880.30
  6. Step 6: Final answer
    x = 89,342.57

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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.