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Finding the Fourth Proportional to 74,689.64, 112,111.90 and 33,165.80

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Solution

The fourth proportional to 74,689.64, 112,111.90 and 33,165.80 is: 49,783.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,689.64 : 112,111.90 = 33,165.80 : x
  2. Step 2: Convert to fraction form
    74,689.64/112,111.90 = 33,165.80/x
  3. Step 3: Cross multiply
    74,689.64x = 112,111.90 × 33,165.80
  4. Step 4: Simplify right side
    74,689.64x = 3,718,280,853.02
  5. Step 5: Solve for x
    x = 3,718,280,853.02/74,689.64
  6. Step 6: Final answer
    x = 49,783.09

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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.