Home / 78,110.35-117,141.28-28,183.93

Finding the Fourth Proportional to 78,110.35, 117,141.28 and 28,183.93

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Solution

The fourth proportional to 78,110.35, 117,141.28 and 28,183.93 is: 42,267.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,110.35 : 117,141.28 = 28,183.93 : x
  2. Step 2: Convert to fraction form
    78,110.35/117,141.28 = 28,183.93/x
  3. Step 3: Cross multiply
    78,110.35x = 117,141.28 × 28,183.93
  4. Step 4: Simplify right side
    78,110.35x = 3,301,501,272.32
  5. Step 5: Solve for x
    x = 3,301,501,272.32/78,110.35
  6. Step 6: Final answer
    x = 42,267.14

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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.