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Finding the Fourth Proportional to 81,710.06, 112,747.59 and 45,893.21

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Solution

The fourth proportional to 81,710.06, 112,747.59 and 45,893.21 is: 63,325.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,710.06 : 112,747.59 = 45,893.21 : x
  2. Step 2: Convert to fraction form
    81,710.06/112,747.59 = 45,893.21/x
  3. Step 3: Cross multiply
    81,710.06x = 112,747.59 × 45,893.21
  4. Step 4: Simplify right side
    81,710.06x = 5,174,348,261.13
  5. Step 5: Solve for x
    x = 5,174,348,261.13/81,710.06
  6. Step 6: Final answer
    x = 63,325.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.