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Finding the Fourth Proportional to 86,071, 118,778.03 and 48,345.25

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Solution

The fourth proportional to 86,071, 118,778.03 and 48,345.25 is: 66,716.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,071 : 118,778.03 = 48,345.25 : x
  2. Step 2: Convert to fraction form
    86,071/118,778.03 = 48,345.25/x
  3. Step 3: Cross multiply
    86,071x = 118,778.03 × 48,345.25
  4. Step 4: Simplify right side
    86,071x = 5,742,353,554.86
  5. Step 5: Solve for x
    x = 5,742,353,554.86/86,071
  6. Step 6: Final answer
    x = 66,716.47

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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.