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Finding the Fourth Proportional to 68,432.65, 94,478.81 and 64,197.16

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Solution

The fourth proportional to 68,432.65, 94,478.81 and 64,197.16 is: 88,631.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,432.65 : 94,478.81 = 64,197.16 : x
  2. Step 2: Convert to fraction form
    68,432.65/94,478.81 = 64,197.16/x
  3. Step 3: Cross multiply
    68,432.65x = 94,478.81 × 64,197.16
  4. Step 4: Simplify right side
    68,432.65x = 6,065,270,725.00
  5. Step 5: Solve for x
    x = 6,065,270,725.00/68,432.65
  6. Step 6: Final answer
    x = 88,631.24

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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.