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Finding the Fourth Proportional to 68,225.50, 93,469.28 and 65,668.74

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Solution

The fourth proportional to 68,225.50, 93,469.28 and 65,668.74 is: 89,966.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,225.50 : 93,469.28 = 65,668.74 : x
  2. Step 2: Convert to fraction form
    68,225.50/93,469.28 = 65,668.74/x
  3. Step 3: Cross multiply
    68,225.50x = 93,469.28 × 65,668.74
  4. Step 4: Simplify right side
    68,225.50x = 6,138,009,846.31
  5. Step 5: Solve for x
    x = 6,138,009,846.31/68,225.50
  6. Step 6: Final answer
    x = 89,966.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.