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Finding the Fourth Proportional to 85,375.30, 128,055.27 and 29,967.94

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Solution

The fourth proportional to 85,375.30, 128,055.27 and 29,967.94 is: 44,949.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,375.30 : 128,055.27 = 29,967.94 : x
  2. Step 2: Convert to fraction form
    85,375.30/128,055.27 = 29,967.94/x
  3. Step 3: Cross multiply
    85,375.30x = 128,055.27 × 29,967.94
  4. Step 4: Simplify right side
    85,375.30x = 3,837,552,648.04
  5. Step 5: Solve for x
    x = 3,837,552,648.04/85,375.30
  6. Step 6: Final answer
    x = 44,949.21

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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.