Home / 74,205.11-111,312.81-29,831.88

Finding the Fourth Proportional to 74,205.11, 111,312.81 and 29,831.88

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Solution

The fourth proportional to 74,205.11, 111,312.81 and 29,831.88 is: 44,749.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,205.11 : 111,312.81 = 29,831.88 : x
  2. Step 2: Convert to fraction form
    74,205.11/111,312.81 = 29,831.88/x
  3. Step 3: Cross multiply
    74,205.11x = 111,312.81 × 29,831.88
  4. Step 4: Simplify right side
    74,205.11x = 3,320,670,390.38
  5. Step 5: Solve for x
    x = 3,320,670,390.38/74,205.11
  6. Step 6: Final answer
    x = 44,749.89

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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.