Home / 81,069,318.37-121,552,889.23-68,777,576.47

Finding the Fourth Proportional to 81,069,318.37, 121,552,889.23 and 68,777,576.47

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Solution

The fourth proportional to 81,069,318.37, 121,552,889.23 and 68,777,576.47 is: 103,123,022.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,069,318.37 : 121,552,889.23 = 68,777,576.47 : x
  2. Step 2: Convert to fraction form
    81,069,318.37/121,552,889.23 = 68,777,576.47/x
  3. Step 3: Cross multiply
    81,069,318.37x = 121,552,889.23 × 68,777,576.47
  4. Step 4: Simplify right side
    81,069,318.37x = 8,360,113,133,947,855
  5. Step 5: Solve for x
    x = 8,360,113,133,947,855/81,069,318.37
  6. Step 6: Final answer
    x = 103,123,022.40

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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.