Home / 66,655.20-91,984.24-38,366.40

Finding the Fourth Proportional to 66,655.20, 91,984.24 and 38,366.40

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Solution

The fourth proportional to 66,655.20, 91,984.24 and 38,366.40 is: 52,945.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,655.20 : 91,984.24 = 38,366.40 : x
  2. Step 2: Convert to fraction form
    66,655.20/91,984.24 = 38,366.40/x
  3. Step 3: Cross multiply
    66,655.20x = 91,984.24 × 38,366.40
  4. Step 4: Simplify right side
    66,655.20x = 3,529,104,145.54
  5. Step 5: Solve for x
    x = 3,529,104,145.54/66,655.20
  6. Step 6: Final answer
    x = 52,945.67

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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.