Home / 85,571,278,562.61-128,361,046,029.32-28,136,840,757.69

Finding the Fourth Proportional to 85,571,278,562.61, 128,361,046,029.32 and 28,136,840,757.69

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Solution

The fourth proportional to 85,571,278,562.61, 128,361,046,029.32 and 28,136,840,757.69 is: 42,206,618,532.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,571,278,562.61 : 128,361,046,029.32 = 28,136,840,757.69 : x
  2. Step 2: Convert to fraction form
    85,571,278,562.61/128,361,046,029.32 = 28,136,840,757.69/x
  3. Step 3: Cross multiply
    85,571,278,562.61x = 128,361,046,029.32 × 28,136,840,757.69
  4. Step 4: Simplify right side
    85,571,278,562.61x = 3,611,674,311,617,493,336,064
  5. Step 5: Solve for x
    x = 3,611,674,311,617,493,336,064/85,571,278,562.61
  6. Step 6: Final answer
    x = 42,206,618,532.35

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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.