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Finding the Fourth Proportional to 85,908.60, 128,895.30 and 41,574.60

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Solution

The fourth proportional to 85,908.60, 128,895.30 and 41,574.60 is: 62,377.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,908.60 : 128,895.30 = 41,574.60 : x
  2. Step 2: Convert to fraction form
    85,908.60/128,895.30 = 41,574.60/x
  3. Step 3: Cross multiply
    85,908.60x = 128,895.30 × 41,574.60
  4. Step 4: Simplify right side
    85,908.60x = 5,358,770,539.38
  5. Step 5: Solve for x
    x = 5,358,770,539.38/85,908.60
  6. Step 6: Final answer
    x = 62,377.58

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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.