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Finding the Fourth Proportional to 70,331.38, 105,497.09 and 21,083.38

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Solution

The fourth proportional to 70,331.38, 105,497.09 and 21,083.38 is: 31,625.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,331.38 : 105,497.09 = 21,083.38 : x
  2. Step 2: Convert to fraction form
    70,331.38/105,497.09 = 21,083.38/x
  3. Step 3: Cross multiply
    70,331.38x = 105,497.09 × 21,083.38
  4. Step 4: Simplify right side
    70,331.38x = 2,224,235,237.36
  5. Step 5: Solve for x
    x = 2,224,235,237.36/70,331.38
  6. Step 6: Final answer
    x = 31,625.08

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1.5x scale

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.