Home / 86,075.22-129,107.81-38,678.07

Finding the Fourth Proportional to 86,075.22, 129,107.81 and 38,678.07

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Solution

The fourth proportional to 86,075.22, 129,107.81 and 38,678.07 is: 58,014.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,075.22 : 129,107.81 = 38,678.07 : x
  2. Step 2: Convert to fraction form
    86,075.22/129,107.81 = 38,678.07/x
  3. Step 3: Cross multiply
    86,075.22x = 129,107.81 × 38,678.07
  4. Step 4: Simplify right side
    86,075.22x = 4,993,640,719.34
  5. Step 5: Solve for x
    x = 4,993,640,719.34/86,075.22
  6. Step 6: Final answer
    x = 58,014.85

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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.