Home / 85,451,625.70-128,177,440.07-20,754,994.77

Finding the Fourth Proportional to 85,451,625.70, 128,177,440.07 and 20,754,994.77

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Solution

The fourth proportional to 85,451,625.70, 128,177,440.07 and 20,754,994.77 is: 31,132,492.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,451,625.70 : 128,177,440.07 = 20,754,994.77 : x
  2. Step 2: Convert to fraction form
    85,451,625.70/128,177,440.07 = 20,754,994.77/x
  3. Step 3: Cross multiply
    85,451,625.70x = 128,177,440.07 × 20,754,994.77
  4. Step 4: Simplify right side
    85,451,625.70x = 2,660,322,098,181,063.50
  5. Step 5: Solve for x
    x = 2,660,322,098,181,063.50/85,451,625.70
  6. Step 6: Final answer
    x = 31,132,492.52

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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.