Home / 65,413.60-98,120.50-18,666.47

Finding the Fourth Proportional to 65,413.60, 98,120.50 and 18,666.47

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Solution

The fourth proportional to 65,413.60, 98,120.50 and 18,666.47 is: 27,999.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,413.60 : 98,120.50 = 18,666.47 : x
  2. Step 2: Convert to fraction form
    65,413.60/98,120.50 = 18,666.47/x
  3. Step 3: Cross multiply
    65,413.60x = 98,120.50 × 18,666.47
  4. Step 4: Simplify right side
    65,413.60x = 1,831,563,568.27
  5. Step 5: Solve for x
    x = 1,831,563,568.27/65,413.60
  6. Step 6: Final answer
    x = 27,999.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.