Home / 78,388.48-117,551.94-28,460.08

Finding the Fourth Proportional to 78,388.48, 117,551.94 and 28,460.08

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Solution

The fourth proportional to 78,388.48, 117,551.94 and 28,460.08 is: 42,678.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,388.48 : 117,551.94 = 28,460.08 : x
  2. Step 2: Convert to fraction form
    78,388.48/117,551.94 = 28,460.08/x
  3. Step 3: Cross multiply
    78,388.48x = 117,551.94 × 28,460.08
  4. Step 4: Simplify right side
    78,388.48x = 3,345,537,616.56
  5. Step 5: Solve for x
    x = 3,345,537,616.56/78,388.48
  6. Step 6: Final answer
    x = 42,678.94

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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.