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Finding the Fourth Proportional to 72,663.48, 109,022.90 and 25,283.84

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Solution

The fourth proportional to 72,663.48, 109,022.90 and 25,283.84 is: 37,935.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,663.48 : 109,022.90 = 25,283.84 : x
  2. Step 2: Convert to fraction form
    72,663.48/109,022.90 = 25,283.84/x
  3. Step 3: Cross multiply
    72,663.48x = 109,022.90 × 25,283.84
  4. Step 4: Simplify right side
    72,663.48x = 2,756,516,888.40
  5. Step 5: Solve for x
    x = 2,756,516,888.40/72,663.48
  6. Step 6: Final answer
    x = 37,935.38

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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.