Home / 72,782.72-100,439.04-40,951.52

Finding the Fourth Proportional to 72,782.72, 100,439.04 and 40,951.52

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Solution

The fourth proportional to 72,782.72, 100,439.04 and 40,951.52 is: 56,512.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,782.72 : 100,439.04 = 40,951.52 : x
  2. Step 2: Convert to fraction form
    72,782.72/100,439.04 = 40,951.52/x
  3. Step 3: Cross multiply
    72,782.72x = 100,439.04 × 40,951.52
  4. Step 4: Simplify right side
    72,782.72x = 4,113,131,355.34
  5. Step 5: Solve for x
    x = 4,113,131,355.34/72,782.72
  6. Step 6: Final answer
    x = 56,512.47

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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.