Home / 78,120.05-117,216.52-46,529.24

Finding the Fourth Proportional to 78,120.05, 117,216.52 and 46,529.24

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Solution

The fourth proportional to 78,120.05, 117,216.52 and 46,529.24 is: 69,815.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,120.05 : 117,216.52 = 46,529.24 : x
  2. Step 2: Convert to fraction form
    78,120.05/117,216.52 = 46,529.24/x
  3. Step 3: Cross multiply
    78,120.05x = 117,216.52 × 46,529.24
  4. Step 4: Simplify right side
    78,120.05x = 5,453,994,888.64
  5. Step 5: Solve for x
    x = 5,453,994,888.64/78,120.05
  6. Step 6: Final answer
    x = 69,815.56

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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.