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Finding the Fourth Proportional to 71,871.77, 107,688.48 and 43,706.63

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Solution

The fourth proportional to 71,871.77, 107,688.48 and 43,706.63 is: 65,487.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,871.77 : 107,688.48 = 43,706.63 : x
  2. Step 2: Convert to fraction form
    71,871.77/107,688.48 = 43,706.63/x
  3. Step 3: Cross multiply
    71,871.77x = 107,688.48 × 43,706.63
  4. Step 4: Simplify right side
    71,871.77x = 4,706,700,550.62
  5. Step 5: Solve for x
    x = 4,706,700,550.62/71,871.77
  6. Step 6: Final answer
    x = 65,487.47

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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.