Home / 42,834.89-64,215.38-20,617.67

Finding the Fourth Proportional to 42,834.89, 64,215.38 and 20,617.67

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Solution

The fourth proportional to 42,834.89, 64,215.38 and 20,617.67 is: 30,908.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,834.89 : 64,215.38 = 20,617.67 : x
  2. Step 2: Convert to fraction form
    42,834.89/64,215.38 = 20,617.67/x
  3. Step 3: Cross multiply
    42,834.89x = 64,215.38 × 20,617.67
  4. Step 4: Simplify right side
    42,834.89x = 1,323,971,410.68
  5. Step 5: Solve for x
    x = 1,323,971,410.68/42,834.89
  6. Step 6: Final answer
    x = 30,908.72

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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.