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Finding the Fourth Proportional to 78,848.60, 118,291.80 and 26,258.54

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Solution

The fourth proportional to 78,848.60, 118,291.80 and 26,258.54 is: 39,394.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,848.60 : 118,291.80 = 26,258.54 : x
  2. Step 2: Convert to fraction form
    78,848.60/118,291.80 = 26,258.54/x
  3. Step 3: Cross multiply
    78,848.60x = 118,291.80 × 26,258.54
  4. Step 4: Simplify right side
    78,848.60x = 3,106,169,961.97
  5. Step 5: Solve for x
    x = 3,106,169,961.97/78,848.60
  6. Step 6: Final answer
    x = 39,394.10

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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.