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Finding the Fourth Proportional to 72,646.62, 108,969.93 and 25,866.69

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Solution

The fourth proportional to 72,646.62, 108,969.93 and 25,866.69 is: 38,800.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,646.62 : 108,969.93 = 25,866.69 : x
  2. Step 2: Convert to fraction form
    72,646.62/108,969.93 = 25,866.69/x
  3. Step 3: Cross multiply
    72,646.62x = 108,969.93 × 25,866.69
  4. Step 4: Simplify right side
    72,646.62x = 2,818,691,398.63
  5. Step 5: Solve for x
    x = 2,818,691,398.63/72,646.62
  6. Step 6: Final answer
    x = 38,800.04

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1.5x scale

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.