Home / 47,722.06-65,834.85-30,720.21

Finding the Fourth Proportional to 47,722.06, 65,834.85 and 30,720.21

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Solution

The fourth proportional to 47,722.06, 65,834.85 and 30,720.21 is: 42,379.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,722.06 : 65,834.85 = 30,720.21 : x
  2. Step 2: Convert to fraction form
    47,722.06/65,834.85 = 30,720.21/x
  3. Step 3: Cross multiply
    47,722.06x = 65,834.85 × 30,720.21
  4. Step 4: Simplify right side
    47,722.06x = 2,022,460,417.32
  5. Step 5: Solve for x
    x = 2,022,460,417.32/47,722.06
  6. Step 6: Final answer
    x = 42,379.99

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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.