Home / 81,348.39-122,101.32-39,258.05

Finding the Fourth Proportional to 81,348.39, 122,101.32 and 39,258.05

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Solution

The fourth proportional to 81,348.39, 122,101.32 and 39,258.05 is: 58,925.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,348.39 : 122,101.32 = 39,258.05 : x
  2. Step 2: Convert to fraction form
    81,348.39/122,101.32 = 39,258.05/x
  3. Step 3: Cross multiply
    81,348.39x = 122,101.32 × 39,258.05
  4. Step 4: Simplify right side
    81,348.39x = 4,793,459,115.12
  5. Step 5: Solve for x
    x = 4,793,459,115.12/81,348.39
  6. Step 6: Final answer
    x = 58,925.06

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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.