Home / 56,861.64-78,439.32-43,409.57

Finding the Fourth Proportional to 56,861.64, 78,439.32 and 43,409.57

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Solution

The fourth proportional to 56,861.64, 78,439.32 and 43,409.57 is: 59,882.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,861.64 : 78,439.32 = 43,409.57 : x
  2. Step 2: Convert to fraction form
    56,861.64/78,439.32 = 43,409.57/x
  3. Step 3: Cross multiply
    56,861.64x = 78,439.32 × 43,409.57
  4. Step 4: Simplify right side
    56,861.64x = 3,405,016,760.10
  5. Step 5: Solve for x
    x = 3,405,016,760.10/56,861.64
  6. Step 6: Final answer
    x = 59,882.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.