Home / 74,821.10-103,255.32-40,831.79

Finding the Fourth Proportional to 74,821.10, 103,255.32 and 40,831.79

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Solution

The fourth proportional to 74,821.10, 103,255.32 and 40,831.79 is: 56,349.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,821.10 : 103,255.32 = 40,831.79 : x
  2. Step 2: Convert to fraction form
    74,821.10/103,255.32 = 40,831.79/x
  3. Step 3: Cross multiply
    74,821.10x = 103,255.32 × 40,831.79
  4. Step 4: Simplify right side
    74,821.10x = 4,216,098,998.19
  5. Step 5: Solve for x
    x = 4,216,098,998.19/74,821.10
  6. Step 6: Final answer
    x = 56,349.06

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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.