Home / 45,103.42-67,655.10-28,488.70

Finding the Fourth Proportional to 45,103.42, 67,655.10 and 28,488.70

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Solution

The fourth proportional to 45,103.42, 67,655.10 and 28,488.70 is: 42,733.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,103.42 : 67,655.10 = 28,488.70 : x
  2. Step 2: Convert to fraction form
    45,103.42/67,655.10 = 28,488.70/x
  3. Step 3: Cross multiply
    45,103.42x = 67,655.10 × 28,488.70
  4. Step 4: Simplify right side
    45,103.42x = 1,927,405,847.37
  5. Step 5: Solve for x
    x = 1,927,405,847.37/45,103.42
  6. Step 6: Final answer
    x = 42,733.03

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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.