Home / 78,036.54-117,053.99-40,577.28

Finding the Fourth Proportional to 78,036.54, 117,053.99 and 40,577.28

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Solution

The fourth proportional to 78,036.54, 117,053.99 and 40,577.28 is: 60,865.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,036.54 : 117,053.99 = 40,577.28 : x
  2. Step 2: Convert to fraction form
    78,036.54/117,053.99 = 40,577.28/x
  3. Step 3: Cross multiply
    78,036.54x = 117,053.99 × 40,577.28
  4. Step 4: Simplify right side
    78,036.54x = 4,749,732,527.35
  5. Step 5: Solve for x
    x = 4,749,732,527.35/78,036.54
  6. Step 6: Final answer
    x = 60,865.49

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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.