Home / 85,961.82-128,979.69-44,437.98

Finding the Fourth Proportional to 85,961.82, 128,979.69 and 44,437.98

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Solution

The fourth proportional to 85,961.82, 128,979.69 and 44,437.98 is: 66,676.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,961.82 : 128,979.69 = 44,437.98 : x
  2. Step 2: Convert to fraction form
    85,961.82/128,979.69 = 44,437.98/x
  3. Step 3: Cross multiply
    85,961.82x = 128,979.69 × 44,437.98
  4. Step 4: Simplify right side
    85,961.82x = 5,731,596,884.63
  5. Step 5: Solve for x
    x = 5,731,596,884.63/85,961.82
  6. Step 6: Final answer
    x = 66,676.08

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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.