Home / 28,105,413.30-42,158,119.95-21,728,121.30

Finding the Fourth Proportional to 28,105,413.30, 42,158,119.95 and 21,728,121.30

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Solution

The fourth proportional to 28,105,413.30, 42,158,119.95 and 21,728,121.30 is: 32,592,181.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,105,413.30 : 42,158,119.95 = 21,728,121.30 : x
  2. Step 2: Convert to fraction form
    28,105,413.30/42,158,119.95 = 21,728,121.30/x
  3. Step 3: Cross multiply
    28,105,413.30x = 42,158,119.95 × 21,728,121.30
  4. Step 4: Simplify right side
    28,105,413.30x = 916,016,744,053,550
  5. Step 5: Solve for x
    x = 916,016,744,053,550/28,105,413.30
  6. Step 6: Final answer
    x = 32,592,181.95

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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.