Home / 72,748.24-100,392.64-40,917.20

Finding the Fourth Proportional to 72,748.24, 100,392.64 and 40,917.20

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Solution

The fourth proportional to 72,748.24, 100,392.64 and 40,917.20 is: 56,465.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,748.24 : 100,392.64 = 40,917.20 : x
  2. Step 2: Convert to fraction form
    72,748.24/100,392.64 = 40,917.20/x
  3. Step 3: Cross multiply
    72,748.24x = 100,392.64 × 40,917.20
  4. Step 4: Simplify right side
    72,748.24x = 4,107,785,729.41
  5. Step 5: Solve for x
    x = 4,107,785,729.41/72,748.24
  6. Step 6: Final answer
    x = 56,465.77

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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.