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Finding the Fourth Proportional to 70,398.35, 105,335.08 and 69,611.03

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Solution

The fourth proportional to 70,398.35, 105,335.08 and 69,611.03 is: 104,157.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,398.35 : 105,335.08 = 69,611.03 : x
  2. Step 2: Convert to fraction form
    70,398.35/105,335.08 = 69,611.03/x
  3. Step 3: Cross multiply
    70,398.35x = 105,335.08 × 69,611.03
  4. Step 4: Simplify right side
    70,398.35x = 7,332,483,413.93
  5. Step 5: Solve for x
    x = 7,332,483,413.93/70,398.35
  6. Step 6: Final answer
    x = 104,157.04

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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.