Home / 75,720.82-113,581.65-31,323.52

Finding the Fourth Proportional to 75,720.82, 113,581.65 and 31,323.52

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Solution

The fourth proportional to 75,720.82, 113,581.65 and 31,323.52 is: 46,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,720.82 : 113,581.65 = 31,323.52 : x
  2. Step 2: Convert to fraction form
    75,720.82/113,581.65 = 31,323.52/x
  3. Step 3: Cross multiply
    75,720.82x = 113,581.65 × 31,323.52
  4. Step 4: Simplify right side
    75,720.82x = 3,557,777,085.41
  5. Step 5: Solve for x
    x = 3,557,777,085.41/75,720.82
  6. Step 6: Final answer
    x = 46,985.45

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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.