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Finding the Fourth Proportional to 101,871.81, 140,630.19 and 61,055.33

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Solution

The fourth proportional to 101,871.81, 140,630.19 and 61,055.33 is: 84,284.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,871.81 : 140,630.19 = 61,055.33 : x
  2. Step 2: Convert to fraction form
    101,871.81/140,630.19 = 61,055.33/x
  3. Step 3: Cross multiply
    101,871.81x = 140,630.19 × 61,055.33
  4. Step 4: Simplify right side
    101,871.81x = 8,586,221,955.26
  5. Step 5: Solve for x
    x = 8,586,221,955.26/101,871.81
  6. Step 6: Final answer
    x = 84,284.57

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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.