Home / 75,749.58-113,605.47-31,388.58

Finding the Fourth Proportional to 75,749.58, 113,605.47 and 31,388.58

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Solution

The fourth proportional to 75,749.58, 113,605.47 and 31,388.58 is: 47,075.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,749.58 : 113,605.47 = 31,388.58 : x
  2. Step 2: Convert to fraction form
    75,749.58/113,605.47 = 31,388.58/x
  3. Step 3: Cross multiply
    75,749.58x = 113,605.47 × 31,388.58
  4. Step 4: Simplify right side
    75,749.58x = 3,565,914,383.53
  5. Step 5: Solve for x
    x = 3,565,914,383.53/75,749.58
  6. Step 6: Final answer
    x = 47,075.04

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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.