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Finding the Fourth Proportional to 84,920.67, 127,379.64 and 21,740.25

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Solution

The fourth proportional to 84,920.67, 127,379.64 and 21,740.25 is: 32,610.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,920.67 : 127,379.64 = 21,740.25 : x
  2. Step 2: Convert to fraction form
    84,920.67/127,379.64 = 21,740.25/x
  3. Step 3: Cross multiply
    84,920.67x = 127,379.64 × 21,740.25
  4. Step 4: Simplify right side
    84,920.67x = 2,769,265,218.51
  5. Step 5: Solve for x
    x = 2,769,265,218.51/84,920.67
  6. Step 6: Final answer
    x = 32,610.03

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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.