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Finding the Fourth Proportional to 85,258.98, 127,889.69 and 69,445.76

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Solution

The fourth proportional to 85,258.98, 127,889.69 and 69,445.76 is: 104,169.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,258.98 : 127,889.69 = 69,445.76 : x
  2. Step 2: Convert to fraction form
    85,258.98/127,889.69 = 69,445.76/x
  3. Step 3: Cross multiply
    85,258.98x = 127,889.69 × 69,445.76
  4. Step 4: Simplify right side
    85,258.98x = 8,881,395,731.54
  5. Step 5: Solve for x
    x = 8,881,395,731.54/85,258.98
  6. Step 6: Final answer
    x = 104,169.62

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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.