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Finding the Fourth Proportional to 85,573.84, 128,253.84 and 41,188.72

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Solution

The fourth proportional to 85,573.84, 128,253.84 and 41,188.72 is: 61,731.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,573.84 : 128,253.84 = 41,188.72 : x
  2. Step 2: Convert to fraction form
    85,573.84/128,253.84 = 41,188.72/x
  3. Step 3: Cross multiply
    85,573.84x = 128,253.84 × 41,188.72
  4. Step 4: Simplify right side
    85,573.84x = 5,282,611,504.68
  5. Step 5: Solve for x
    x = 5,282,611,504.68/85,573.84
  6. Step 6: Final answer
    x = 61,731.62

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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.