Home / 85,536,623.70-128,052,993.15-80,553,762.90

Finding the Fourth Proportional to 85,536,623.70, 128,052,993.15 and 80,553,762.90

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Solution

The fourth proportional to 85,536,623.70, 128,052,993.15 and 80,553,762.90 is: 120,593,378.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,623.70 : 128,052,993.15 = 80,553,762.90 : x
  2. Step 2: Convert to fraction form
    85,536,623.70/128,052,993.15 = 80,553,762.90/x
  3. Step 3: Cross multiply
    85,536,623.70x = 128,052,993.15 × 80,553,762.90
  4. Step 4: Simplify right side
    85,536,623.70x = 10,315,150,448,840,426
  5. Step 5: Solve for x
    x = 10,315,150,448,840,426/85,536,623.70
  6. Step 6: Final answer
    x = 120,593,378.63

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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.