Home / 51,390.98-70,920.04-30,170.60

Finding the Fourth Proportional to 51,390.98, 70,920.04 and 30,170.60

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Solution

The fourth proportional to 51,390.98, 70,920.04 and 30,170.60 is: 41,635.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,390.98 : 70,920.04 = 30,170.60 : x
  2. Step 2: Convert to fraction form
    51,390.98/70,920.04 = 30,170.60/x
  3. Step 3: Cross multiply
    51,390.98x = 70,920.04 × 30,170.60
  4. Step 4: Simplify right side
    51,390.98x = 2,139,700,158.82
  5. Step 5: Solve for x
    x = 2,139,700,158.82/51,390.98
  6. Step 6: Final answer
    x = 41,635.71

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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.