Home / 86,018,823.20-129,028,234.80-77,259,936.80

Finding the Fourth Proportional to 86,018,823.20, 129,028,234.80 and 77,259,936.80

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Solution

The fourth proportional to 86,018,823.20, 129,028,234.80 and 77,259,936.80 is: 115,889,905.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,018,823.20 : 129,028,234.80 = 77,259,936.80 : x
  2. Step 2: Convert to fraction form
    86,018,823.20/129,028,234.80 = 77,259,936.80/x
  3. Step 3: Cross multiply
    86,018,823.20x = 129,028,234.80 × 77,259,936.80
  4. Step 4: Simplify right side
    86,018,823.20x = 9,968,713,266,063,560
  5. Step 5: Solve for x
    x = 9,968,713,266,063,560/86,018,823.20
  6. Step 6: Final answer
    x = 115,889,905.20

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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.