Home / 54,313.40-81,470.10-53,438.60

Finding the Fourth Proportional to 54,313.40, 81,470.10 and 53,438.60

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Solution

The fourth proportional to 54,313.40, 81,470.10 and 53,438.60 is: 80,157.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,313.40 : 81,470.10 = 53,438.60 : x
  2. Step 2: Convert to fraction form
    54,313.40/81,470.10 = 53,438.60/x
  3. Step 3: Cross multiply
    54,313.40x = 81,470.10 × 53,438.60
  4. Step 4: Simplify right side
    54,313.40x = 4,353,648,085.86
  5. Step 5: Solve for x
    x = 4,353,648,085.86/54,313.40
  6. Step 6: Final answer
    x = 80,157.90

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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.