Home / 72,831.72-109,445.22-39,576.36

Finding the Fourth Proportional to 72,831.72, 109,445.22 and 39,576.36

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Solution

The fourth proportional to 72,831.72, 109,445.22 and 39,576.36 is: 59,471.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,831.72 : 109,445.22 = 39,576.36 : x
  2. Step 2: Convert to fraction form
    72,831.72/109,445.22 = 39,576.36/x
  3. Step 3: Cross multiply
    72,831.72x = 109,445.22 × 39,576.36
  4. Step 4: Simplify right side
    72,831.72x = 4,331,443,427.00
  5. Step 5: Solve for x
    x = 4,331,443,427.00/72,831.72
  6. Step 6: Final answer
    x = 59,471.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.