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Finding the Fourth Proportional to 43,706.68, 65,569.74 and 12,539.56

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Solution

The fourth proportional to 43,706.68, 65,569.74 and 12,539.56 is: 18,812.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,706.68 : 65,569.74 = 12,539.56 : x
  2. Step 2: Convert to fraction form
    43,706.68/65,569.74 = 12,539.56/x
  3. Step 3: Cross multiply
    43,706.68x = 65,569.74 × 12,539.56
  4. Step 4: Simplify right side
    43,706.68x = 822,215,688.91
  5. Step 5: Solve for x
    x = 822,215,688.91/43,706.68
  6. Step 6: Final answer
    x = 18,812.13

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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.