Home / 86,022.03-129,075.30-38,670.57

Finding the Fourth Proportional to 86,022.03, 129,075.30 and 38,670.57

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Solution

The fourth proportional to 86,022.03, 129,075.30 and 38,670.57 is: 58,024.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,022.03 : 129,075.30 = 38,670.57 : x
  2. Step 2: Convert to fraction form
    86,022.03/129,075.30 = 38,670.57/x
  3. Step 3: Cross multiply
    86,022.03x = 129,075.30 × 38,670.57
  4. Step 4: Simplify right side
    86,022.03x = 4,991,414,778.54
  5. Step 5: Solve for x
    x = 4,991,414,778.54/86,022.03
  6. Step 6: Final answer
    x = 58,024.85

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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.