Home / 72,246.56-99,704.40-40,416.80

Finding the Fourth Proportional to 72,246.56, 99,704.40 and 40,416.80

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Solution

The fourth proportional to 72,246.56, 99,704.40 and 40,416.80 is: 55,777.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,246.56 : 99,704.40 = 40,416.80 : x
  2. Step 2: Convert to fraction form
    72,246.56/99,704.40 = 40,416.80/x
  3. Step 3: Cross multiply
    72,246.56x = 99,704.40 × 40,416.80
  4. Step 4: Simplify right side
    72,246.56x = 4,029,732,793.92
  5. Step 5: Solve for x
    x = 4,029,732,793.92/72,246.56
  6. Step 6: Final answer
    x = 55,777.50

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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.