Home / 86,671.09-129,900.30-49,262.50

Finding the Fourth Proportional to 86,671.09, 129,900.30 and 49,262.50

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Solution

The fourth proportional to 86,671.09, 129,900.30 and 49,262.50 is: 73,833.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,671.09 : 129,900.30 = 49,262.50 : x
  2. Step 2: Convert to fraction form
    86,671.09/129,900.30 = 49,262.50/x
  3. Step 3: Cross multiply
    86,671.09x = 129,900.30 × 49,262.50
  4. Step 4: Simplify right side
    86,671.09x = 6,399,213,528.75
  5. Step 5: Solve for x
    x = 6,399,213,528.75/86,671.09
  6. Step 6: Final answer
    x = 73,833.31

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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.