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Finding the Fourth Proportional to 86,836.36, 119,703.54 and 67,940.68

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Solution

The fourth proportional to 86,836.36, 119,703.54 and 67,940.68 is: 93,655.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,836.36 : 119,703.54 = 67,940.68 : x
  2. Step 2: Convert to fraction form
    86,836.36/119,703.54 = 67,940.68/x
  3. Step 3: Cross multiply
    86,836.36x = 119,703.54 × 67,940.68
  4. Step 4: Simplify right side
    86,836.36x = 8,132,739,906.01
  5. Step 5: Solve for x
    x = 8,132,739,906.01/86,836.36
  6. Step 6: Final answer
    x = 93,655.93

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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.