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Finding the Fourth Proportional to 84,885.47, 127,153.25 and 49,718.51

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Solution

The fourth proportional to 84,885.47, 127,153.25 and 49,718.51 is: 74,475.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,885.47 : 127,153.25 = 49,718.51 : x
  2. Step 2: Convert to fraction form
    84,885.47/127,153.25 = 49,718.51/x
  3. Step 3: Cross multiply
    84,885.47x = 127,153.25 × 49,718.51
  4. Step 4: Simplify right side
    84,885.47x = 6,321,869,883.06
  5. Step 5: Solve for x
    x = 6,321,869,883.06/84,885.47
  6. Step 6: Final answer
    x = 74,475.29

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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.