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Finding the Fourth Proportional to 86,047, 118,693.38 and 54,160.54

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Solution

The fourth proportional to 86,047, 118,693.38 and 54,160.54 is: 74,709.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,047 : 118,693.38 = 54,160.54 : x
  2. Step 2: Convert to fraction form
    86,047/118,693.38 = 54,160.54/x
  3. Step 3: Cross multiply
    86,047x = 118,693.38 × 54,160.54
  4. Step 4: Simplify right side
    86,047x = 6,428,497,555.23
  5. Step 5: Solve for x
    x = 6,428,497,555.23/86,047
  6. Step 6: Final answer
    x = 74,709.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.