Home / 47,721.60-65,826.36-30,720.24

Finding the Fourth Proportional to 47,721.60, 65,826.36 and 30,720.24

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Solution

The fourth proportional to 47,721.60, 65,826.36 and 30,720.24 is: 42,374.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,721.60 : 65,826.36 = 30,720.24 : x
  2. Step 2: Convert to fraction form
    47,721.60/65,826.36 = 30,720.24/x
  3. Step 3: Cross multiply
    47,721.60x = 65,826.36 × 30,720.24
  4. Step 4: Simplify right side
    47,721.60x = 2,022,201,577.53
  5. Step 5: Solve for x
    x = 2,022,201,577.53/47,721.60
  6. Step 6: Final answer
    x = 42,374.97

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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.