Home / 74,384.28-102,649.92-40,392.47

Finding the Fourth Proportional to 74,384.28, 102,649.92 and 40,392.47

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Solution

The fourth proportional to 74,384.28, 102,649.92 and 40,392.47 is: 55,741.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,384.28 : 102,649.92 = 40,392.47 : x
  2. Step 2: Convert to fraction form
    74,384.28/102,649.92 = 40,392.47/x
  3. Step 3: Cross multiply
    74,384.28x = 102,649.92 × 40,392.47
  4. Step 4: Simplify right side
    74,384.28x = 4,146,283,814.10
  5. Step 5: Solve for x
    x = 4,146,283,814.10/74,384.28
  6. Step 6: Final answer
    x = 55,741.40

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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.