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Finding the Fourth Proportional to 74,712.66, 112,065.75 and 18,551.45

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Solution

The fourth proportional to 74,712.66, 112,065.75 and 18,551.45 is: 27,826.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,712.66 : 112,065.75 = 18,551.45 : x
  2. Step 2: Convert to fraction form
    74,712.66/112,065.75 = 18,551.45/x
  3. Step 3: Cross multiply
    74,712.66x = 112,065.75 × 18,551.45
  4. Step 4: Simplify right side
    74,712.66x = 2,078,981,597.51
  5. Step 5: Solve for x
    x = 2,078,981,597.51/74,712.66
  6. Step 6: Final answer
    x = 27,826.36

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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.