Home / 85,636.86-128,467.62-26,477.70

Finding the Fourth Proportional to 85,636.86, 128,467.62 and 26,477.70

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Solution

The fourth proportional to 85,636.86, 128,467.62 and 26,477.70 is: 39,720.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,636.86 : 128,467.62 = 26,477.70 : x
  2. Step 2: Convert to fraction form
    85,636.86/128,467.62 = 26,477.70/x
  3. Step 3: Cross multiply
    85,636.86x = 128,467.62 × 26,477.70
  4. Step 4: Simplify right side
    85,636.86x = 3,401,527,102.07
  5. Step 5: Solve for x
    x = 3,401,527,102.07/85,636.86
  6. Step 6: Final answer
    x = 39,720.36

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1.5x scale

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.