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Finding the Fourth Proportional to 85,474.53, 128,162.25 and 41,040.63

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Solution

The fourth proportional to 85,474.53, 128,162.25 and 41,040.63 is: 61,537.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,474.53 : 128,162.25 = 41,040.63 : x
  2. Step 2: Convert to fraction form
    85,474.53/128,162.25 = 41,040.63/x
  3. Step 3: Cross multiply
    85,474.53x = 128,162.25 × 41,040.63
  4. Step 4: Simplify right side
    85,474.53x = 5,259,859,482.22
  5. Step 5: Solve for x
    x = 5,259,859,482.22/85,474.53
  6. Step 6: Final answer
    x = 61,537.16

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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.