Home / 67,215.95-100,800.43-19,818.46

Finding the Fourth Proportional to 67,215.95, 100,800.43 and 19,818.46

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Solution

The fourth proportional to 67,215.95, 100,800.43 and 19,818.46 is: 29,720.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,215.95 : 100,800.43 = 19,818.46 : x
  2. Step 2: Convert to fraction form
    67,215.95/100,800.43 = 19,818.46/x
  3. Step 3: Cross multiply
    67,215.95x = 100,800.43 × 19,818.46
  4. Step 4: Simplify right side
    67,215.95x = 1,997,709,366.39
  5. Step 5: Solve for x
    x = 1,997,709,366.39/67,215.95
  6. Step 6: Final answer
    x = 29,720.76

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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.