Home / 66,724.63-100,075.40-31,189.15

Finding the Fourth Proportional to 66,724.63, 100,075.40 and 31,189.15

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Solution

The fourth proportional to 66,724.63, 100,075.40 and 31,189.15 is: 46,778.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,724.63 : 100,075.40 = 31,189.15 : x
  2. Step 2: Convert to fraction form
    66,724.63/100,075.40 = 31,189.15/x
  3. Step 3: Cross multiply
    66,724.63x = 100,075.40 × 31,189.15
  4. Step 4: Simplify right side
    66,724.63x = 3,121,266,748.02
  5. Step 5: Solve for x
    x = 3,121,266,748.02/66,724.63
  6. Step 6: Final answer
    x = 46,778.33

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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.