Home / 65,413.56-90,707.25-63,197.40

Finding the Fourth Proportional to 65,413.56, 90,707.25 and 63,197.40

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Solution

The fourth proportional to 65,413.56, 90,707.25 and 63,197.40 is: 87,634.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,413.56 : 90,707.25 = 63,197.40 : x
  2. Step 2: Convert to fraction form
    65,413.56/90,707.25 = 63,197.40/x
  3. Step 3: Cross multiply
    65,413.56x = 90,707.25 × 63,197.40
  4. Step 4: Simplify right side
    65,413.56x = 5,732,462,361.15
  5. Step 5: Solve for x
    x = 5,732,462,361.15/65,413.56
  6. Step 6: Final answer
    x = 87,634.16

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.