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Finding the Fourth Proportional to 86,066.39, 118,782.74 and 48,340.64

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Solution

The fourth proportional to 86,066.39, 118,782.74 and 48,340.64 is: 66,716.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,066.39 : 118,782.74 = 48,340.64 : x
  2. Step 2: Convert to fraction form
    86,066.39/118,782.74 = 48,340.64/x
  3. Step 3: Cross multiply
    86,066.39x = 118,782.74 × 48,340.64
  4. Step 4: Simplify right side
    86,066.39x = 5,742,033,430.85
  5. Step 5: Solve for x
    x = 5,742,033,430.85/86,066.39
  6. Step 6: Final answer
    x = 66,716.33

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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.