Home / 85,564.21-128,364.62-25,597.39

Finding the Fourth Proportional to 85,564.21, 128,364.62 and 25,597.39

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Solution

The fourth proportional to 85,564.21, 128,364.62 and 25,597.39 is: 38,401.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,564.21 : 128,364.62 = 25,597.39 : x
  2. Step 2: Convert to fraction form
    85,564.21/128,364.62 = 25,597.39/x
  3. Step 3: Cross multiply
    85,564.21x = 128,364.62 × 25,597.39
  4. Step 4: Simplify right side
    85,564.21x = 3,285,799,240.34
  5. Step 5: Solve for x
    x = 3,285,799,240.34/85,564.21
  6. Step 6: Final answer
    x = 38,401.56

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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.