Home / 47,415.20-65,403.08-30,401.56

Finding the Fourth Proportional to 47,415.20, 65,403.08 and 30,401.56

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Solution

The fourth proportional to 47,415.20, 65,403.08 and 30,401.56 is: 41,934.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,415.20 : 65,403.08 = 30,401.56 : x
  2. Step 2: Convert to fraction form
    47,415.20/65,403.08 = 30,401.56/x
  3. Step 3: Cross multiply
    47,415.20x = 65,403.08 × 30,401.56
  4. Step 4: Simplify right side
    47,415.20x = 1,988,355,660.80
  5. Step 5: Solve for x
    x = 1,988,355,660.80/47,415.20
  6. Step 6: Final answer
    x = 41,934.98

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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.