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Finding the Fourth Proportional to 72,400.80, 108,633.60 and 32,937.60

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Solution

The fourth proportional to 72,400.80, 108,633.60 and 32,937.60 is: 49,421.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,400.80 : 108,633.60 = 32,937.60 : x
  2. Step 2: Convert to fraction form
    72,400.80/108,633.60 = 32,937.60/x
  3. Step 3: Cross multiply
    72,400.80x = 108,633.60 × 32,937.60
  4. Step 4: Simplify right side
    72,400.80x = 3,578,130,063.36
  5. Step 5: Solve for x
    x = 3,578,130,063.36/72,400.80
  6. Step 6: Final answer
    x = 49,421.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.