Home / 78,237.48-117,388.12-28,322.85

Finding the Fourth Proportional to 78,237.48, 117,388.12 and 28,322.85

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Solution

The fourth proportional to 78,237.48, 117,388.12 and 28,322.85 is: 42,495.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,237.48 : 117,388.12 = 28,322.85 : x
  2. Step 2: Convert to fraction form
    78,237.48/117,388.12 = 28,322.85/x
  3. Step 3: Cross multiply
    78,237.48x = 117,388.12 × 28,322.85
  4. Step 4: Simplify right side
    78,237.48x = 3,324,766,114.54
  5. Step 5: Solve for x
    x = 3,324,766,114.54/78,237.48
  6. Step 6: Final answer
    x = 42,495.82

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1.5x scale

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.