Home / 30,390.15-45,435.37-25,761.81

Finding the Fourth Proportional to 30,390.15, 45,435.37 and 25,761.81

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Solution

The fourth proportional to 30,390.15, 45,435.37 and 25,761.81 is: 38,515.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,390.15 : 45,435.37 = 25,761.81 : x
  2. Step 2: Convert to fraction form
    30,390.15/45,435.37 = 25,761.81/x
  3. Step 3: Cross multiply
    30,390.15x = 45,435.37 × 25,761.81
  4. Step 4: Simplify right side
    30,390.15x = 1,170,497,369.22
  5. Step 5: Solve for x
    x = 1,170,497,369.22/30,390.15
  6. Step 6: Final answer
    x = 38,515.68

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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.