Home / 86,222.96-129,290.70-39,435.76

Finding the Fourth Proportional to 86,222.96, 129,290.70 and 39,435.76

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Solution

The fourth proportional to 86,222.96, 129,290.70 and 39,435.76 is: 59,133.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,222.96 : 129,290.70 = 39,435.76 : x
  2. Step 2: Convert to fraction form
    86,222.96/129,290.70 = 39,435.76/x
  3. Step 3: Cross multiply
    86,222.96x = 129,290.70 × 39,435.76
  4. Step 4: Simplify right side
    86,222.96x = 5,098,677,015.43
  5. Step 5: Solve for x
    x = 5,098,677,015.43/86,222.96
  6. Step 6: Final answer
    x = 59,133.63

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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.