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Finding the Fourth Proportional to 86,485.96, 129,787.26 and 33,888.88

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Solution

The fourth proportional to 86,485.96, 129,787.26 and 33,888.88 is: 50,856.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,485.96 : 129,787.26 = 33,888.88 : x
  2. Step 2: Convert to fraction form
    86,485.96/129,787.26 = 33,888.88/x
  3. Step 3: Cross multiply
    86,485.96x = 129,787.26 × 33,888.88
  4. Step 4: Simplify right side
    86,485.96x = 4,398,344,879.67
  5. Step 5: Solve for x
    x = 4,398,344,879.67/86,485.96
  6. Step 6: Final answer
    x = 50,856.17

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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.