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Finding the Fourth Proportional to 65,503.68, 98,173.28 and 28,019.66

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Solution

The fourth proportional to 65,503.68, 98,173.28 and 28,019.66 is: 41,994.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,503.68 : 98,173.28 = 28,019.66 : x
  2. Step 2: Convert to fraction form
    65,503.68/98,173.28 = 28,019.66/x
  3. Step 3: Cross multiply
    65,503.68x = 98,173.28 × 28,019.66
  4. Step 4: Simplify right side
    65,503.68x = 2,750,781,926.68
  5. Step 5: Solve for x
    x = 2,750,781,926.68/65,503.68
  6. Step 6: Final answer
    x = 41,994.31

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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.