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Finding the Fourth Proportional to 105,843.51, 146,062.80 and 57,445.52

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Solution

The fourth proportional to 105,843.51, 146,062.80 and 57,445.52 is: 79,274.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,843.51 : 146,062.80 = 57,445.52 : x
  2. Step 2: Convert to fraction form
    105,843.51/146,062.80 = 57,445.52/x
  3. Step 3: Cross multiply
    105,843.51x = 146,062.80 × 57,445.52
  4. Step 4: Simplify right side
    105,843.51x = 8,390,652,481.11
  5. Step 5: Solve for x
    x = 8,390,652,481.11/105,843.51
  6. Step 6: Final answer
    x = 79,274.14

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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.