Home / 103,558.77-155,338.52-31,512.38

Finding the Fourth Proportional to 103,558.77, 155,338.52 and 31,512.38

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Solution

The fourth proportional to 103,558.77, 155,338.52 and 31,512.38 is: 47,268.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,558.77 : 155,338.52 = 31,512.38 : x
  2. Step 2: Convert to fraction form
    103,558.77/155,338.52 = 31,512.38/x
  3. Step 3: Cross multiply
    103,558.77x = 155,338.52 × 31,512.38
  4. Step 4: Simplify right side
    103,558.77x = 4,895,085,536.62
  5. Step 5: Solve for x
    x = 4,895,085,536.62/103,558.77
  6. Step 6: Final answer
    x = 47,268.67

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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.