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Finding the Fourth Proportional to 58,451.52, 87,669 and 19,009.20

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Solution

The fourth proportional to 58,451.52, 87,669 and 19,009.20 is: 28,511.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,451.52 : 87,669 = 19,009.20 : x
  2. Step 2: Convert to fraction form
    58,451.52/87,669 = 19,009.20/x
  3. Step 3: Cross multiply
    58,451.52x = 87,669 × 19,009.20
  4. Step 4: Simplify right side
    58,451.52x = 1,666,517,554.80
  5. Step 5: Solve for x
    x = 1,666,517,554.80/58,451.52
  6. Step 6: Final answer
    x = 28,511.11

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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.