Home / 82,036,123.20-123,044,853.60-21,457,972.80

Finding the Fourth Proportional to 82,036,123.20, 123,044,853.60 and 21,457,972.80

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Solution

The fourth proportional to 82,036,123.20, 123,044,853.60 and 21,457,972.80 is: 32,184,518.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,036,123.20 : 123,044,853.60 = 21,457,972.80 : x
  2. Step 2: Convert to fraction form
    82,036,123.20/123,044,853.60 = 21,457,972.80/x
  3. Step 3: Cross multiply
    82,036,123.20x = 123,044,853.60 × 21,457,972.80
  4. Step 4: Simplify right side
    82,036,123.20x = 2,640,293,121,728,782
  5. Step 5: Solve for x
    x = 2,640,293,121,728,782/82,036,123.20
  6. Step 6: Final answer
    x = 32,184,518.46

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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.