Home / 81,552,005.80-122,328,008.70-49,303,378.60

Finding the Fourth Proportional to 81,552,005.80, 122,328,008.70 and 49,303,378.60

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Solution

The fourth proportional to 81,552,005.80, 122,328,008.70 and 49,303,378.60 is: 73,955,067.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,552,005.80 : 122,328,008.70 = 49,303,378.60 : x
  2. Step 2: Convert to fraction form
    81,552,005.80/122,328,008.70 = 49,303,378.60/x
  3. Step 3: Cross multiply
    81,552,005.80x = 122,328,008.70 × 49,303,378.60
  4. Step 4: Simplify right side
    81,552,005.80x = 6,031,184,126,320,194
  5. Step 5: Solve for x
    x = 6,031,184,126,320,194/81,552,005.80
  6. Step 6: Final answer
    x = 73,955,067.90

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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.