Home / 55,339.10-76,431.70-40,299.02

Finding the Fourth Proportional to 55,339.10, 76,431.70 and 40,299.02

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Solution

The fourth proportional to 55,339.10, 76,431.70 and 40,299.02 is: 55,659.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,339.10 : 76,431.70 = 40,299.02 : x
  2. Step 2: Convert to fraction form
    55,339.10/76,431.70 = 40,299.02/x
  3. Step 3: Cross multiply
    55,339.10x = 76,431.70 × 40,299.02
  4. Step 4: Simplify right side
    55,339.10x = 3,080,122,606.93
  5. Step 5: Solve for x
    x = 3,080,122,606.93/55,339.10
  6. Step 6: Final answer
    x = 55,659.07

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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.