Home / 78,559.93-108,413.06-42,749.70

Finding the Fourth Proportional to 78,559.93, 108,413.06 and 42,749.70

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Solution

The fourth proportional to 78,559.93, 108,413.06 and 42,749.70 is: 58,994.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,559.93 : 108,413.06 = 42,749.70 : x
  2. Step 2: Convert to fraction form
    78,559.93/108,413.06 = 42,749.70/x
  3. Step 3: Cross multiply
    78,559.93x = 108,413.06 × 42,749.70
  4. Step 4: Simplify right side
    78,559.93x = 4,634,625,791.08
  5. Step 5: Solve for x
    x = 4,634,625,791.08/78,559.93
  6. Step 6: Final answer
    x = 58,994.78

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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.