Home / 74,031.26-102,162.80-40,039.79

Finding the Fourth Proportional to 74,031.26, 102,162.80 and 40,039.79

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Solution

The fourth proportional to 74,031.26, 102,162.80 and 40,039.79 is: 55,254.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,031.26 : 102,162.80 = 40,039.79 : x
  2. Step 2: Convert to fraction form
    74,031.26/102,162.80 = 40,039.79/x
  3. Step 3: Cross multiply
    74,031.26x = 102,162.80 × 40,039.79
  4. Step 4: Simplify right side
    74,031.26x = 4,090,576,346.80
  5. Step 5: Solve for x
    x = 4,090,576,346.80/74,031.26
  6. Step 6: Final answer
    x = 55,254.72

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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.