Home / 86,022,028.80-128,949,062.40-76,952,102.40

Finding the Fourth Proportional to 86,022,028.80, 128,949,062.40 and 76,952,102.40

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Solution

The fourth proportional to 86,022,028.80, 128,949,062.40 and 76,952,102.40 is: 115,353,027.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,022,028.80 : 128,949,062.40 = 76,952,102.40 : x
  2. Step 2: Convert to fraction form
    86,022,028.80/128,949,062.40 = 76,952,102.40/x
  3. Step 3: Cross multiply
    86,022,028.80x = 128,949,062.40 × 76,952,102.40
  4. Step 4: Simplify right side
    86,022,028.80x = 9,922,901,454,188,790
  5. Step 5: Solve for x
    x = 9,922,901,454,188,790/86,022,028.80
  6. Step 6: Final answer
    x = 115,353,027.50

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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.