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Finding the Fourth Proportional to 35,808.10, 53,712.15 and 19,219.30

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Solution

The fourth proportional to 35,808.10, 53,712.15 and 19,219.30 is: 28,828.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,808.10 : 53,712.15 = 19,219.30 : x
  2. Step 2: Convert to fraction form
    35,808.10/53,712.15 = 19,219.30/x
  3. Step 3: Cross multiply
    35,808.10x = 53,712.15 × 19,219.30
  4. Step 4: Simplify right side
    35,808.10x = 1,032,309,924.50
  5. Step 5: Solve for x
    x = 1,032,309,924.50/35,808.10
  6. Step 6: Final answer
    x = 28,828.95

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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.