Home / 53,687.22-74,089.92-30,720.77

Finding the Fourth Proportional to 53,687.22, 74,089.92 and 30,720.77

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Solution

The fourth proportional to 53,687.22, 74,089.92 and 30,720.77 is: 42,395.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,687.22 : 74,089.92 = 30,720.77 : x
  2. Step 2: Convert to fraction form
    53,687.22/74,089.92 = 30,720.77/x
  3. Step 3: Cross multiply
    53,687.22x = 74,089.92 × 30,720.77
  4. Step 4: Simplify right side
    53,687.22x = 2,276,099,515.87
  5. Step 5: Solve for x
    x = 2,276,099,515.87/53,687.22
  6. Step 6: Final answer
    x = 42,395.56

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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.