Home / 78,413.05-108,215.34-44,421.80

Finding the Fourth Proportional to 78,413.05, 108,215.34 and 44,421.80

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Solution

The fourth proportional to 78,413.05, 108,215.34 and 44,421.80 is: 61,305.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,413.05 : 108,215.34 = 44,421.80 : x
  2. Step 2: Convert to fraction form
    78,413.05/108,215.34 = 44,421.80/x
  3. Step 3: Cross multiply
    78,413.05x = 108,215.34 × 44,421.80
  4. Step 4: Simplify right side
    78,413.05x = 4,807,119,968.30
  5. Step 5: Solve for x
    x = 4,807,119,968.30/78,413.05
  6. Step 6: Final answer
    x = 61,305.11

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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.