Home / 78,739.54-118,039.36-30,697.07

Finding the Fourth Proportional to 78,739.54, 118,039.36 and 30,697.07

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Solution

The fourth proportional to 78,739.54, 118,039.36 and 30,697.07 is: 46,018.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,739.54 : 118,039.36 = 30,697.07 : x
  2. Step 2: Convert to fraction form
    78,739.54/118,039.36 = 30,697.07/x
  3. Step 3: Cross multiply
    78,739.54x = 118,039.36 × 30,697.07
  4. Step 4: Simplify right side
    78,739.54x = 3,623,462,496.68
  5. Step 5: Solve for x
    x = 3,623,462,496.68/78,739.54
  6. Step 6: Final answer
    x = 46,018.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.