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Finding the Fourth Proportional to 65,015.29, 89,720.04 and 36,335.35

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Solution

The fourth proportional to 65,015.29, 89,720.04 and 36,335.35 is: 50,142.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,015.29 : 89,720.04 = 36,335.35 : x
  2. Step 2: Convert to fraction form
    65,015.29/89,720.04 = 36,335.35/x
  3. Step 3: Cross multiply
    65,015.29x = 89,720.04 × 36,335.35
  4. Step 4: Simplify right side
    65,015.29x = 3,260,009,055.41
  5. Step 5: Solve for x
    x = 3,260,009,055.41/65,015.29
  6. Step 6: Final answer
    x = 50,142.19

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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.