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Finding the Fourth Proportional to 71,366.64, 107,045.80 and 21,445.64

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Solution

The fourth proportional to 71,366.64, 107,045.80 and 21,445.64 is: 32,167.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,366.64 : 107,045.80 = 21,445.64 : x
  2. Step 2: Convert to fraction form
    71,366.64/107,045.80 = 21,445.64/x
  3. Step 3: Cross multiply
    71,366.64x = 107,045.80 × 21,445.64
  4. Step 4: Simplify right side
    71,366.64x = 2,295,665,690.31
  5. Step 5: Solve for x
    x = 2,295,665,690.31/71,366.64
  6. Step 6: Final answer
    x = 32,167.21

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1.5x scale

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.