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Finding the Fourth Proportional to 63,709.60, 87,917.36 and 35,413.60

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Solution

The fourth proportional to 63,709.60, 87,917.36 and 35,413.60 is: 48,869.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,709.60 : 87,917.36 = 35,413.60 : x
  2. Step 2: Convert to fraction form
    63,709.60/87,917.36 = 35,413.60/x
  3. Step 3: Cross multiply
    63,709.60x = 87,917.36 × 35,413.60
  4. Step 4: Simplify right side
    63,709.60x = 3,113,470,220.10
  5. Step 5: Solve for x
    x = 3,113,470,220.10/63,709.60
  6. Step 6: Final answer
    x = 48,869.72

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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.