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Finding the Fourth Proportional to 85,482.30, 128,183.18 and 49,953.88

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Solution

The fourth proportional to 85,482.30, 128,183.18 and 49,953.88 is: 74,907.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,482.30 : 128,183.18 = 49,953.88 : x
  2. Step 2: Convert to fraction form
    85,482.30/128,183.18 = 49,953.88/x
  3. Step 3: Cross multiply
    85,482.30x = 128,183.18 × 49,953.88
  4. Step 4: Simplify right side
    85,482.30x = 6,403,247,191.74
  5. Step 5: Solve for x
    x = 6,403,247,191.74/85,482.30
  6. Step 6: Final answer
    x = 74,907.29

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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.