Home / 31,470.45-47,205.67-30,103.78

Finding the Fourth Proportional to 31,470.45, 47,205.67 and 30,103.78

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Solution

The fourth proportional to 31,470.45, 47,205.67 and 30,103.78 is: 45,155.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,470.45 : 47,205.67 = 30,103.78 : x
  2. Step 2: Convert to fraction form
    31,470.45/47,205.67 = 30,103.78/x
  3. Step 3: Cross multiply
    31,470.45x = 47,205.67 × 30,103.78
  4. Step 4: Simplify right side
    31,470.45x = 1,421,069,280.88
  5. Step 5: Solve for x
    x = 1,421,069,280.88/31,470.45
  6. Step 6: Final answer
    x = 45,155.68

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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.