Home / 75,078.56-103,620.07-42,813.25

Finding the Fourth Proportional to 75,078.56, 103,620.07 and 42,813.25

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Solution

The fourth proportional to 75,078.56, 103,620.07 and 42,813.25 is: 59,088.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,078.56 : 103,620.07 = 42,813.25 : x
  2. Step 2: Convert to fraction form
    75,078.56/103,620.07 = 42,813.25/x
  3. Step 3: Cross multiply
    75,078.56x = 103,620.07 × 42,813.25
  4. Step 4: Simplify right side
    75,078.56x = 4,436,311,961.93
  5. Step 5: Solve for x
    x = 4,436,311,961.93/75,078.56
  6. Step 6: Final answer
    x = 59,088.93

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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.