Home / 71,258.40-98,338.14-39,429.54

Finding the Fourth Proportional to 71,258.40, 98,338.14 and 39,429.54

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Solution

The fourth proportional to 71,258.40, 98,338.14 and 39,429.54 is: 54,413.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,258.40 : 98,338.14 = 39,429.54 : x
  2. Step 2: Convert to fraction form
    71,258.40/98,338.14 = 39,429.54/x
  3. Step 3: Cross multiply
    71,258.40x = 98,338.14 × 39,429.54
  4. Step 4: Simplify right side
    71,258.40x = 3,877,427,624.66
  5. Step 5: Solve for x
    x = 3,877,427,624.66/71,258.40
  6. Step 6: Final answer
    x = 54,413.62

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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.