Home / 78,206.36-117,309.67-19,042.07

Finding the Fourth Proportional to 78,206.36, 117,309.67 and 19,042.07

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Solution

The fourth proportional to 78,206.36, 117,309.67 and 19,042.07 is: 28,563.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,206.36 : 117,309.67 = 19,042.07 : x
  2. Step 2: Convert to fraction form
    78,206.36/117,309.67 = 19,042.07/x
  3. Step 3: Cross multiply
    78,206.36x = 117,309.67 × 19,042.07
  4. Step 4: Simplify right side
    78,206.36x = 2,233,818,313.66
  5. Step 5: Solve for x
    x = 2,233,818,313.66/78,206.36
  6. Step 6: Final answer
    x = 28,563.13

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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.