Home / 72,247.56-99,705.78-40,417.80

Finding the Fourth Proportional to 72,247.56, 99,705.78 and 40,417.80

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Solution

The fourth proportional to 72,247.56, 99,705.78 and 40,417.80 is: 55,778.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,247.56 : 99,705.78 = 40,417.80 : x
  2. Step 2: Convert to fraction form
    72,247.56/99,705.78 = 40,417.80/x
  3. Step 3: Cross multiply
    72,247.56x = 99,705.78 × 40,417.80
  4. Step 4: Simplify right side
    72,247.56x = 4,029,888,274.88
  5. Step 5: Solve for x
    x = 4,029,888,274.88/72,247.56
  6. Step 6: Final answer
    x = 55,778.88

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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.