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Finding the Fourth Proportional to 78,589.05, 117,892.01 and 33,615.08

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Solution

The fourth proportional to 78,589.05, 117,892.01 and 33,615.08 is: 50,426.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,589.05 : 117,892.01 = 33,615.08 : x
  2. Step 2: Convert to fraction form
    78,589.05/117,892.01 = 33,615.08/x
  3. Step 3: Cross multiply
    78,589.05x = 117,892.01 × 33,615.08
  4. Step 4: Simplify right side
    78,589.05x = 3,962,949,347.51
  5. Step 5: Solve for x
    x = 3,962,949,347.51/78,589.05
  6. Step 6: Final answer
    x = 50,426.23

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1.5x scale

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.