Home / 74,462.86-111,715.08-30,120.67

Finding the Fourth Proportional to 74,462.86, 111,715.08 and 30,120.67

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Solution

The fourth proportional to 74,462.86, 111,715.08 and 30,120.67 is: 45,189.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,462.86 : 111,715.08 = 30,120.67 : x
  2. Step 2: Convert to fraction form
    74,462.86/111,715.08 = 30,120.67/x
  3. Step 3: Cross multiply
    74,462.86x = 111,715.08 × 30,120.67
  4. Step 4: Simplify right side
    74,462.86x = 3,364,933,058.70
  5. Step 5: Solve for x
    x = 3,364,933,058.70/74,462.86
  6. Step 6: Final answer
    x = 45,189.41

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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.