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Finding the Fourth Proportional to 85,977.64, 128,889.51 and 33,374.62

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Solution

The fourth proportional to 85,977.64, 128,889.51 and 33,374.62 is: 50,032.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,977.64 : 128,889.51 = 33,374.62 : x
  2. Step 2: Convert to fraction form
    85,977.64/128,889.51 = 33,374.62/x
  3. Step 3: Cross multiply
    85,977.64x = 128,889.51 × 33,374.62
  4. Step 4: Simplify right side
    85,977.64x = 4,301,638,418.24
  5. Step 5: Solve for x
    x = 4,301,638,418.24/85,977.64
  6. Step 6: Final answer
    x = 50,032.06

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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.