Home / 78,252.36-117,379.77-19,089.15

Finding the Fourth Proportional to 78,252.36, 117,379.77 and 19,089.15

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Solution

The fourth proportional to 78,252.36, 117,379.77 and 19,089.15 is: 28,634.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,252.36 : 117,379.77 = 19,089.15 : x
  2. Step 2: Convert to fraction form
    78,252.36/117,379.77 = 19,089.15/x
  3. Step 3: Cross multiply
    78,252.36x = 117,379.77 × 19,089.15
  4. Step 4: Simplify right side
    78,252.36x = 2,240,680,036.50
  5. Step 5: Solve for x
    x = 2,240,680,036.50/78,252.36
  6. Step 6: Final answer
    x = 28,634.03

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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.