Home / 85,388.42-117,911.86-53,178.34

Finding the Fourth Proportional to 85,388.42, 117,911.86 and 53,178.34

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Solution

The fourth proportional to 85,388.42, 117,911.86 and 53,178.34 is: 73,433.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,388.42 : 117,911.86 = 53,178.34 : x
  2. Step 2: Convert to fraction form
    85,388.42/117,911.86 = 53,178.34/x
  3. Step 3: Cross multiply
    85,388.42x = 117,911.86 × 53,178.34
  4. Step 4: Simplify right side
    85,388.42x = 6,270,356,981.11
  5. Step 5: Solve for x
    x = 6,270,356,981.11/85,388.42
  6. Step 6: Final answer
    x = 73,433.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.