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Finding the Fourth Proportional to 35,154.68, 48,505.95 and 20,819.01

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Solution

The fourth proportional to 35,154.68, 48,505.95 and 20,819.01 is: 28,725.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,154.68 : 48,505.95 = 20,819.01 : x
  2. Step 2: Convert to fraction form
    35,154.68/48,505.95 = 20,819.01/x
  3. Step 3: Cross multiply
    35,154.68x = 48,505.95 × 20,819.01
  4. Step 4: Simplify right side
    35,154.68x = 1,009,845,858.11
  5. Step 5: Solve for x
    x = 1,009,845,858.11/35,154.68
  6. Step 6: Final answer
    x = 28,725.79

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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.