Home / 77,320,727.20-115,981,090.80-51,840,330.40

Finding the Fourth Proportional to 77,320,727.20, 115,981,090.80 and 51,840,330.40

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Solution

The fourth proportional to 77,320,727.20, 115,981,090.80 and 51,840,330.40 is: 77,760,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,320,727.20 : 115,981,090.80 = 51,840,330.40 : x
  2. Step 2: Convert to fraction form
    77,320,727.20/115,981,090.80 = 51,840,330.40/x
  3. Step 3: Cross multiply
    77,320,727.20x = 115,981,090.80 × 51,840,330.40
  4. Step 4: Simplify right side
    77,320,727.20x = 6,012,498,067,224,400
  5. Step 5: Solve for x
    x = 6,012,498,067,224,400/77,320,727.20
  6. Step 6: Final answer
    x = 77,760,495.60

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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.