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Finding the Fourth Proportional to 84,871, 127,334.58 and 45,419.32

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Solution

The fourth proportional to 84,871, 127,334.58 and 45,419.32 is: 68,144.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,871 : 127,334.58 = 45,419.32 : x
  2. Step 2: Convert to fraction form
    84,871/127,334.58 = 45,419.32/x
  3. Step 3: Cross multiply
    84,871x = 127,334.58 × 45,419.32
  4. Step 4: Simplify right side
    84,871x = 5,783,450,036.09
  5. Step 5: Solve for x
    x = 5,783,450,036.09/84,871
  6. Step 6: Final answer
    x = 68,144.01

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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.