Home / 82,021,487.41-122,729,558.70-49,252,013.42

Finding the Fourth Proportional to 82,021,487.41, 122,729,558.70 and 49,252,013.42

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Solution

The fourth proportional to 82,021,487.41, 122,729,558.70 and 49,252,013.42 is: 73,696,272.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,021,487.41 : 122,729,558.70 = 49,252,013.42 : x
  2. Step 2: Convert to fraction form
    82,021,487.41/122,729,558.70 = 49,252,013.42/x
  3. Step 3: Cross multiply
    82,021,487.41x = 122,729,558.70 × 49,252,013.42
  4. Step 4: Simplify right side
    82,021,487.41x = 6,044,677,872,123,078
  5. Step 5: Solve for x
    x = 6,044,677,872,123,078/82,021,487.41
  6. Step 6: Final answer
    x = 73,696,272.32

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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.