Home / 86,076,979.20-129,115,468.80-82,728,900.90

Finding the Fourth Proportional to 86,076,979.20, 129,115,468.80 and 82,728,900.90

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Solution

The fourth proportional to 86,076,979.20, 129,115,468.80 and 82,728,900.90 is: 124,093,351.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,076,979.20 : 129,115,468.80 = 82,728,900.90 : x
  2. Step 2: Convert to fraction form
    86,076,979.20/129,115,468.80 = 82,728,900.90/x
  3. Step 3: Cross multiply
    86,076,979.20x = 129,115,468.80 × 82,728,900.90
  4. Step 4: Simplify right side
    86,076,979.20x = 10,681,580,823,012,242
  5. Step 5: Solve for x
    x = 10,681,580,823,012,242/86,076,979.20
  6. Step 6: Final answer
    x = 124,093,351.35

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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.