Home / 78,706.09-118,075.94-25,401.11

Finding the Fourth Proportional to 78,706.09, 118,075.94 and 25,401.11

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Solution

The fourth proportional to 78,706.09, 118,075.94 and 25,401.11 is: 38,107.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,706.09 : 118,075.94 = 25,401.11 : x
  2. Step 2: Convert to fraction form
    78,706.09/118,075.94 = 25,401.11/x
  3. Step 3: Cross multiply
    78,706.09x = 118,075.94 × 25,401.11
  4. Step 4: Simplify right side
    78,706.09x = 2,999,259,940.29
  5. Step 5: Solve for x
    x = 2,999,259,940.29/78,706.09
  6. Step 6: Final answer
    x = 38,107.09

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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.