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Finding the Fourth Proportional to 71,299.66, 107,054.62 and 39,771.32

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Solution

The fourth proportional to 71,299.66, 107,054.62 and 39,771.32 is: 59,715.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,299.66 : 107,054.62 = 39,771.32 : x
  2. Step 2: Convert to fraction form
    71,299.66/107,054.62 = 39,771.32/x
  3. Step 3: Cross multiply
    71,299.66x = 107,054.62 × 39,771.32
  4. Step 4: Simplify right side
    71,299.66x = 4,257,703,549.50
  5. Step 5: Solve for x
    x = 4,257,703,549.50/71,299.66
  6. Step 6: Final answer
    x = 59,715.62

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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.