Home / 84,741.12-127,112.40-21,561.30

Finding the Fourth Proportional to 84,741.12, 127,112.40 and 21,561.30

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Solution

The fourth proportional to 84,741.12, 127,112.40 and 21,561.30 is: 32,342.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,741.12 : 127,112.40 = 21,561.30 : x
  2. Step 2: Convert to fraction form
    84,741.12/127,112.40 = 21,561.30/x
  3. Step 3: Cross multiply
    84,741.12x = 127,112.40 × 21,561.30
  4. Step 4: Simplify right side
    84,741.12x = 2,740,708,590.12
  5. Step 5: Solve for x
    x = 2,740,708,590.12/84,741.12
  6. Step 6: Final answer
    x = 32,342.13

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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.