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Finding the Fourth Proportional to 84,962.70, 127,443.60 and 21,782.70

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Solution

The fourth proportional to 84,962.70, 127,443.60 and 21,782.70 is: 32,673.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,962.70 : 127,443.60 = 21,782.70 : x
  2. Step 2: Convert to fraction form
    84,962.70/127,443.60 = 21,782.70/x
  3. Step 3: Cross multiply
    84,962.70x = 127,443.60 × 21,782.70
  4. Step 4: Simplify right side
    84,962.70x = 2,776,065,705.72
  5. Step 5: Solve for x
    x = 2,776,065,705.72/84,962.70
  6. Step 6: Final answer
    x = 32,673.93

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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.