Home / 85,549,456.35-128,324,184.53-82,526,147.55

Finding the Fourth Proportional to 85,549,456.35, 128,324,184.53 and 82,526,147.55

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Solution

The fourth proportional to 85,549,456.35, 128,324,184.53 and 82,526,147.55 is: 123,789,221.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,549,456.35 : 128,324,184.53 = 82,526,147.55 : x
  2. Step 2: Convert to fraction form
    85,549,456.35/128,324,184.53 = 82,526,147.55/x
  3. Step 3: Cross multiply
    85,549,456.35x = 128,324,184.53 × 82,526,147.55
  4. Step 4: Simplify right side
    85,549,456.35x = 10,590,100,586,343,576
  5. Step 5: Solve for x
    x = 10,590,100,586,343,576/85,549,456.35
  6. Step 6: Final answer
    x = 123,789,221.33

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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.