Home / 74,231.28-102,387.78-45,920.16

Finding the Fourth Proportional to 74,231.28, 102,387.78 and 45,920.16

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Solution

The fourth proportional to 74,231.28, 102,387.78 and 45,920.16 is: 63,338.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,231.28 : 102,387.78 = 45,920.16 : x
  2. Step 2: Convert to fraction form
    74,231.28/102,387.78 = 45,920.16/x
  3. Step 3: Cross multiply
    74,231.28x = 102,387.78 × 45,920.16
  4. Step 4: Simplify right side
    74,231.28x = 4,701,663,239.64
  5. Step 5: Solve for x
    x = 4,701,663,239.64/74,231.28
  6. Step 6: Final answer
    x = 63,338.03

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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.