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Finding the Fourth Proportional to 85,036.51, 127,551.93 and 45,670.51

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Solution

The fourth proportional to 85,036.51, 127,551.93 and 45,670.51 is: 68,504.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,036.51 : 127,551.93 = 45,670.51 : x
  2. Step 2: Convert to fraction form
    85,036.51/127,551.93 = 45,670.51/x
  3. Step 3: Cross multiply
    85,036.51x = 127,551.93 × 45,670.51
  4. Step 4: Simplify right side
    85,036.51x = 5,825,361,694.58
  5. Step 5: Solve for x
    x = 5,825,361,694.58/85,036.51
  6. Step 6: Final answer
    x = 68,504.24

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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.