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Finding the Fourth Proportional to 81,164.21, 112,004.51 and 45,354.51

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Solution

The fourth proportional to 81,164.21, 112,004.51 and 45,354.51 is: 62,588.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,164.21 : 112,004.51 = 45,354.51 : x
  2. Step 2: Convert to fraction form
    81,164.21/112,004.51 = 45,354.51/x
  3. Step 3: Cross multiply
    81,164.21x = 112,004.51 × 45,354.51
  4. Step 4: Simplify right side
    81,164.21x = 5,079,909,442.07
  5. Step 5: Solve for x
    x = 5,079,909,442.07/81,164.21
  6. Step 6: Final answer
    x = 62,588.05

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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.