Home / 82,537,729.05-123,512,660.78-71,872,167.45

Finding the Fourth Proportional to 82,537,729.05, 123,512,660.78 and 71,872,167.45

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Solution

The fourth proportional to 82,537,729.05, 123,512,660.78 and 71,872,167.45 is: 107,552,300.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,537,729.05 : 123,512,660.78 = 71,872,167.45 : x
  2. Step 2: Convert to fraction form
    82,537,729.05/123,512,660.78 = 71,872,167.45/x
  3. Step 3: Cross multiply
    82,537,729.05x = 123,512,660.78 × 71,872,167.45
  4. Step 4: Simplify right side
    82,537,729.05x = 8,877,122,637,415,848
  5. Step 5: Solve for x
    x = 8,877,122,637,415,848/82,537,729.05
  6. Step 6: Final answer
    x = 107,552,300.50

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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.