Home / 85,789.13-128,692.60-23,459.63

Finding the Fourth Proportional to 85,789.13, 128,692.60 and 23,459.63

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Solution

The fourth proportional to 85,789.13, 128,692.60 and 23,459.63 is: 35,191.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,789.13 : 128,692.60 = 23,459.63 : x
  2. Step 2: Convert to fraction form
    85,789.13/128,692.60 = 23,459.63/x
  3. Step 3: Cross multiply
    85,789.13x = 128,692.60 × 23,459.63
  4. Step 4: Simplify right side
    85,789.13x = 3,019,080,077.63
  5. Step 5: Solve for x
    x = 3,019,080,077.63/85,789.13
  6. Step 6: Final answer
    x = 35,191.87

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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.