Home / 75,721.12-113,436.11-42,339.94

Finding the Fourth Proportional to 75,721.12, 113,436.11 and 42,339.94

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Solution

The fourth proportional to 75,721.12, 113,436.11 and 42,339.94 is: 63,428.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,721.12 : 113,436.11 = 42,339.94 : x
  2. Step 2: Convert to fraction form
    75,721.12/113,436.11 = 42,339.94/x
  3. Step 3: Cross multiply
    75,721.12x = 113,436.11 × 42,339.94
  4. Step 4: Simplify right side
    75,721.12x = 4,802,877,879.53
  5. Step 5: Solve for x
    x = 4,802,877,879.53/75,721.12
  6. Step 6: Final answer
    x = 63,428.51

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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.