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Finding the Fourth Proportional to 69,975.64, 96,490.15 and 47,275.21

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Solution

The fourth proportional to 69,975.64, 96,490.15 and 47,275.21 is: 65,188.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,975.64 : 96,490.15 = 47,275.21 : x
  2. Step 2: Convert to fraction form
    69,975.64/96,490.15 = 47,275.21/x
  3. Step 3: Cross multiply
    69,975.64x = 96,490.15 × 47,275.21
  4. Step 4: Simplify right side
    69,975.64x = 4,561,592,104.18
  5. Step 5: Solve for x
    x = 4,561,592,104.18/69,975.64
  6. Step 6: Final answer
    x = 65,188.29

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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.