Home / 75,711.12-113,421.12-42,329.94

Finding the Fourth Proportional to 75,711.12, 113,421.12 and 42,329.94

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Solution

The fourth proportional to 75,711.12, 113,421.12 and 42,329.94 is: 63,413.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,711.12 : 113,421.12 = 42,329.94 : x
  2. Step 2: Convert to fraction form
    75,711.12/113,421.12 = 42,329.94/x
  3. Step 3: Cross multiply
    75,711.12x = 113,421.12 × 42,329.94
  4. Step 4: Simplify right side
    75,711.12x = 4,801,109,204.33
  5. Step 5: Solve for x
    x = 4,801,109,204.33/75,711.12
  6. Step 6: Final answer
    x = 63,413.53

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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.