Home / 72,739.20-100,374.48-40,901.76

Finding the Fourth Proportional to 72,739.20, 100,374.48 and 40,901.76

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Solution

The fourth proportional to 72,739.20, 100,374.48 and 40,901.76 is: 56,441.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,739.20 : 100,374.48 = 40,901.76 : x
  2. Step 2: Convert to fraction form
    72,739.20/100,374.48 = 40,901.76/x
  3. Step 3: Cross multiply
    72,739.20x = 100,374.48 × 40,901.76
  4. Step 4: Simplify right side
    72,739.20x = 4,105,492,891.08
  5. Step 5: Solve for x
    x = 4,105,492,891.08/72,739.20
  6. Step 6: Final answer
    x = 56,441.27

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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.