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Finding the Fourth Proportional to 86,623, 119,539.80 and 46,879

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Solution

The fourth proportional to 86,623, 119,539.80 and 46,879 is: 64,693.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,623 : 119,539.80 = 46,879 : x
  2. Step 2: Convert to fraction form
    86,623/119,539.80 = 46,879/x
  3. Step 3: Cross multiply
    86,623x = 119,539.80 × 46,879
  4. Step 4: Simplify right side
    86,623x = 5,603,906,284.20
  5. Step 5: Solve for x
    x = 5,603,906,284.20/86,623
  6. Step 6: Final answer
    x = 64,693.05

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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.