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Finding the Fourth Proportional to 72,468.99, 100,008.24 and 43,784.67

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Solution

The fourth proportional to 72,468.99, 100,008.24 and 43,784.67 is: 60,423.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,468.99 : 100,008.24 = 43,784.67 : x
  2. Step 2: Convert to fraction form
    72,468.99/100,008.24 = 43,784.67/x
  3. Step 3: Cross multiply
    72,468.99x = 100,008.24 × 43,784.67
  4. Step 4: Simplify right side
    72,468.99x = 4,378,827,785.68
  5. Step 5: Solve for x
    x = 4,378,827,785.68/72,468.99
  6. Step 6: Final answer
    x = 60,423.47

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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.