Home / 85,221,621.20-127,757,782.20-51,156,520.40

Finding the Fourth Proportional to 85,221,621.20, 127,757,782.20 and 51,156,520.40

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Solution

The fourth proportional to 85,221,621.20, 127,757,782.20 and 51,156,520.40 is: 76,689,970.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,221,621.20 : 127,757,782.20 = 51,156,520.40 : x
  2. Step 2: Convert to fraction form
    85,221,621.20/127,757,782.20 = 51,156,520.40/x
  3. Step 3: Cross multiply
    85,221,621.20x = 127,757,782.20 × 51,156,520.40
  4. Step 4: Simplify right side
    85,221,621.20x = 6,535,643,591,373,057
  5. Step 5: Solve for x
    x = 6,535,643,591,373,057/85,221,621.20
  6. Step 6: Final answer
    x = 76,689,970.21

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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.