Home / 68,109.97-93,990.28-39,430.84

Finding the Fourth Proportional to 68,109.97, 93,990.28 and 39,430.84

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Solution

The fourth proportional to 68,109.97, 93,990.28 and 39,430.84 is: 54,413.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,109.97 : 93,990.28 = 39,430.84 : x
  2. Step 2: Convert to fraction form
    68,109.97/93,990.28 = 39,430.84/x
  3. Step 3: Cross multiply
    68,109.97x = 93,990.28 × 39,430.84
  4. Step 4: Simplify right side
    68,109.97x = 3,706,115,222.28
  5. Step 5: Solve for x
    x = 3,706,115,222.28/68,109.97
  6. Step 6: Final answer
    x = 54,413.70

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1.5x scale

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.