Home / 74,039.72-102,174.81-40,048.20

Finding the Fourth Proportional to 74,039.72, 102,174.81 and 40,048.20

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Solution

The fourth proportional to 74,039.72, 102,174.81 and 40,048.20 is: 55,266.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,039.72 : 102,174.81 = 40,048.20 : x
  2. Step 2: Convert to fraction form
    74,039.72/102,174.81 = 40,048.20/x
  3. Step 3: Cross multiply
    74,039.72x = 102,174.81 × 40,048.20
  4. Step 4: Simplify right side
    74,039.72x = 4,091,917,225.84
  5. Step 5: Solve for x
    x = 4,091,917,225.84/74,039.72
  6. Step 6: Final answer
    x = 55,266.52

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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.