Home / 84,741.73-127,111.65-20,700.43

Finding the Fourth Proportional to 84,741.73, 127,111.65 and 20,700.43

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Solution

The fourth proportional to 84,741.73, 127,111.65 and 20,700.43 is: 31,050.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,741.73 : 127,111.65 = 20,700.43 : x
  2. Step 2: Convert to fraction form
    84,741.73/127,111.65 = 20,700.43/x
  3. Step 3: Cross multiply
    84,741.73x = 127,111.65 × 20,700.43
  4. Step 4: Simplify right side
    84,741.73x = 2,631,265,813.01
  5. Step 5: Solve for x
    x = 2,631,265,813.01/84,741.73
  6. Step 6: Final answer
    x = 31,050.41

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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.