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Finding the Fourth Proportional to 84,913.78, 127,371.78 and 36,871.32

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Solution

The fourth proportional to 84,913.78, 127,371.78 and 36,871.32 is: 55,307.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,913.78 : 127,371.78 = 36,871.32 : x
  2. Step 2: Convert to fraction form
    84,913.78/127,371.78 = 36,871.32/x
  3. Step 3: Cross multiply
    84,913.78x = 127,371.78 × 36,871.32
  4. Step 4: Simplify right side
    84,913.78x = 4,696,365,659.35
  5. Step 5: Solve for x
    x = 4,696,365,659.35/84,913.78
  6. Step 6: Final answer
    x = 55,307.46

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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.