Home / 85,662.24-128,539.53-40,673.22

Finding the Fourth Proportional to 85,662.24, 128,539.53 and 40,673.22

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Solution

The fourth proportional to 85,662.24, 128,539.53 and 40,673.22 is: 61,031.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,662.24 : 128,539.53 = 40,673.22 : x
  2. Step 2: Convert to fraction form
    85,662.24/128,539.53 = 40,673.22/x
  3. Step 3: Cross multiply
    85,662.24x = 128,539.53 × 40,673.22
  4. Step 4: Simplify right side
    85,662.24x = 5,228,116,582.39
  5. Step 5: Solve for x
    x = 5,228,116,582.39/85,662.24
  6. Step 6: Final answer
    x = 61,031.75

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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.