Home / 72,568.88-100,148.38-40,303.63

Finding the Fourth Proportional to 72,568.88, 100,148.38 and 40,303.63

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Solution

The fourth proportional to 72,568.88, 100,148.38 and 40,303.63 is: 55,620.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,568.88 : 100,148.38 = 40,303.63 : x
  2. Step 2: Convert to fraction form
    72,568.88/100,148.38 = 40,303.63/x
  3. Step 3: Cross multiply
    72,568.88x = 100,148.38 × 40,303.63
  4. Step 4: Simplify right side
    72,568.88x = 4,036,342,550.36
  5. Step 5: Solve for x
    x = 4,036,342,550.36/72,568.88
  6. Step 6: Final answer
    x = 55,620.85

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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.