Home / 74,120.91-102,287.66-40,130.11

Finding the Fourth Proportional to 74,120.91, 102,287.66 and 40,130.11

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Solution

The fourth proportional to 74,120.91, 102,287.66 and 40,130.11 is: 55,379.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,120.91 : 102,287.66 = 40,130.11 : x
  2. Step 2: Convert to fraction form
    74,120.91/102,287.66 = 40,130.11/x
  3. Step 3: Cross multiply
    74,120.91x = 102,287.66 × 40,130.11
  4. Step 4: Simplify right side
    74,120.91x = 4,104,814,536.00
  5. Step 5: Solve for x
    x = 4,104,814,536.00/74,120.91
  6. Step 6: Final answer
    x = 55,379.98

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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.