Home / 42,206.67-63,280.85-21,123.99

Finding the Fourth Proportional to 42,206.67, 63,280.85 and 21,123.99

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Solution

The fourth proportional to 42,206.67, 63,280.85 and 21,123.99 is: 31,671.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,206.67 : 63,280.85 = 21,123.99 : x
  2. Step 2: Convert to fraction form
    42,206.67/63,280.85 = 21,123.99/x
  3. Step 3: Cross multiply
    42,206.67x = 63,280.85 × 21,123.99
  4. Step 4: Simplify right side
    42,206.67x = 1,336,743,936.97
  5. Step 5: Solve for x
    x = 1,336,743,936.97/42,206.67
  6. Step 6: Final answer
    x = 31,671.39

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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.