Home / 105,413.30-145,469.16-57,666.08

Finding the Fourth Proportional to 105,413.30, 145,469.16 and 57,666.08

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Solution

The fourth proportional to 105,413.30, 145,469.16 and 57,666.08 is: 79,578.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,413.30 : 145,469.16 = 57,666.08 : x
  2. Step 2: Convert to fraction form
    105,413.30/145,469.16 = 57,666.08/x
  3. Step 3: Cross multiply
    105,413.30x = 145,469.16 × 57,666.08
  4. Step 4: Simplify right side
    105,413.30x = 8,388,636,218.09
  5. Step 5: Solve for x
    x = 8,388,636,218.09/105,413.30
  6. Step 6: Final answer
    x = 79,578.54

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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.