Home / 75,465.16-113,221.40-31,112.80

Finding the Fourth Proportional to 75,465.16, 113,221.40 and 31,112.80

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Solution

The fourth proportional to 75,465.16, 113,221.40 and 31,112.80 is: 46,678.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,465.16 : 113,221.40 = 31,112.80 : x
  2. Step 2: Convert to fraction form
    75,465.16/113,221.40 = 31,112.80/x
  3. Step 3: Cross multiply
    75,465.16x = 113,221.40 × 31,112.80
  4. Step 4: Simplify right side
    75,465.16x = 3,522,634,773.92
  5. Step 5: Solve for x
    x = 3,522,634,773.92/75,465.16
  6. Step 6: Final answer
    x = 46,678.95

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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.