Home / 72,639.08-100,212.90-45,774.44

Finding the Fourth Proportional to 72,639.08, 100,212.90 and 45,774.44

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Solution

The fourth proportional to 72,639.08, 100,212.90 and 45,774.44 is: 63,150.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,639.08 : 100,212.90 = 45,774.44 : x
  2. Step 2: Convert to fraction form
    72,639.08/100,212.90 = 45,774.44/x
  3. Step 3: Cross multiply
    72,639.08x = 100,212.90 × 45,774.44
  4. Step 4: Simplify right side
    72,639.08x = 4,587,189,378.28
  5. Step 5: Solve for x
    x = 4,587,189,378.28/72,639.08
  6. Step 6: Final answer
    x = 63,150.43

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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.