Home / 86,516.24-129,774.12-20,852.24

Finding the Fourth Proportional to 86,516.24, 129,774.12 and 20,852.24

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Solution

The fourth proportional to 86,516.24, 129,774.12 and 20,852.24 is: 31,278.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,516.24 : 129,774.12 = 20,852.24 : x
  2. Step 2: Convert to fraction form
    86,516.24/129,774.12 = 20,852.24/x
  3. Step 3: Cross multiply
    86,516.24x = 129,774.12 × 20,852.24
  4. Step 4: Simplify right side
    86,516.24x = 2,706,081,096.03
  5. Step 5: Solve for x
    x = 2,706,081,096.03/86,516.24
  6. Step 6: Final answer
    x = 31,278.30

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1.5x scale

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.