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Finding the Fourth Proportional to 99,797.55, 149,725.02 and 57,707.79

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Solution

The fourth proportional to 99,797.55, 149,725.02 and 57,707.79 is: 86,578.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,797.55 : 149,725.02 = 57,707.79 : x
  2. Step 2: Convert to fraction form
    99,797.55/149,725.02 = 57,707.79/x
  3. Step 3: Cross multiply
    99,797.55x = 149,725.02 × 57,707.79
  4. Step 4: Simplify right side
    99,797.55x = 8,640,300,011.91
  5. Step 5: Solve for x
    x = 8,640,300,011.91/99,797.55
  6. Step 6: Final answer
    x = 86,578.28

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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.