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Finding the Fourth Proportional to 35,301.88, 48,707.96 and 19,988.78

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Solution

The fourth proportional to 35,301.88, 48,707.96 and 19,988.78 is: 27,579.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,301.88 : 48,707.96 = 19,988.78 : x
  2. Step 2: Convert to fraction form
    35,301.88/48,707.96 = 19,988.78/x
  3. Step 3: Cross multiply
    35,301.88x = 48,707.96 × 19,988.78
  4. Step 4: Simplify right side
    35,301.88x = 973,612,696.69
  5. Step 5: Solve for x
    x = 973,612,696.69/35,301.88
  6. Step 6: Final answer
    x = 27,579.63

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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.