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Finding the Fourth Proportional to 71,507.72, 107,297.98 and 29,420.12

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Solution

The fourth proportional to 71,507.72, 107,297.98 and 29,420.12 is: 44,145.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,507.72 : 107,297.98 = 29,420.12 : x
  2. Step 2: Convert to fraction form
    71,507.72/107,297.98 = 29,420.12/x
  3. Step 3: Cross multiply
    71,507.72x = 107,297.98 × 29,420.12
  4. Step 4: Simplify right side
    71,507.72x = 3,156,719,447.36
  5. Step 5: Solve for x
    x = 3,156,719,447.36/71,507.72
  6. Step 6: Final answer
    x = 44,145.16

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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.