Home / 80,734.13-111,413.10-47,200.13

Finding the Fourth Proportional to 80,734.13, 111,413.10 and 47,200.13

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Solution

The fourth proportional to 80,734.13, 111,413.10 and 47,200.13 is: 65,136.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,734.13 : 111,413.10 = 47,200.13 : x
  2. Step 2: Convert to fraction form
    80,734.13/111,413.10 = 47,200.13/x
  3. Step 3: Cross multiply
    80,734.13x = 111,413.10 × 47,200.13
  4. Step 4: Simplify right side
    80,734.13x = 5,258,712,246.64
  5. Step 5: Solve for x
    x = 5,258,712,246.64/80,734.13
  6. Step 6: Final answer
    x = 65,136.18

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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.