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Finding the Fourth Proportional to 65,009.36, 89,711.88 and 36,329.42

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Solution

The fourth proportional to 65,009.36, 89,711.88 and 36,329.42 is: 50,134.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,009.36 : 89,711.88 = 36,329.42 : x
  2. Step 2: Convert to fraction form
    65,009.36/89,711.88 = 36,329.42/x
  3. Step 3: Cross multiply
    65,009.36x = 89,711.88 × 36,329.42
  4. Step 4: Simplify right side
    65,009.36x = 3,259,180,567.51
  5. Step 5: Solve for x
    x = 3,259,180,567.51/65,009.36
  6. Step 6: Final answer
    x = 50,134.02

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1.5x scale

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.