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Finding the Fourth Proportional to 71,448.35, 98,528.60 and 65,797.79

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Solution

The fourth proportional to 71,448.35, 98,528.60 and 65,797.79 is: 90,736.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,448.35 : 98,528.60 = 65,797.79 : x
  2. Step 2: Convert to fraction form
    71,448.35/98,528.60 = 65,797.79/x
  3. Step 3: Cross multiply
    71,448.35x = 98,528.60 × 65,797.79
  4. Step 4: Simplify right side
    71,448.35x = 6,482,963,803.65
  5. Step 5: Solve for x
    x = 6,482,963,803.65/71,448.35
  6. Step 6: Final answer
    x = 90,736.37

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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.