Home / 65,534.78-90,435.34-40,083.77

Finding the Fourth Proportional to 65,534.78, 90,435.34 and 40,083.77

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Solution

The fourth proportional to 65,534.78, 90,435.34 and 40,083.77 is: 55,313.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,534.78 : 90,435.34 = 40,083.77 : x
  2. Step 2: Convert to fraction form
    65,534.78/90,435.34 = 40,083.77/x
  3. Step 3: Cross multiply
    65,534.78x = 90,435.34 × 40,083.77
  4. Step 4: Simplify right side
    65,534.78x = 3,624,989,368.43
  5. Step 5: Solve for x
    x = 3,624,989,368.43/65,534.78
  6. Step 6: Final answer
    x = 55,313.98

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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.