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Finding the Fourth Proportional to 104,548, 156,822.12 and 28,647.18

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Solution

The fourth proportional to 104,548, 156,822.12 and 28,647.18 is: 42,970.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,548 : 156,822.12 = 28,647.18 : x
  2. Step 2: Convert to fraction form
    104,548/156,822.12 = 28,647.18/x
  3. Step 3: Cross multiply
    104,548x = 156,822.12 × 28,647.18
  4. Step 4: Simplify right side
    104,548x = 4,492,511,499.62
  5. Step 5: Solve for x
    x = 4,492,511,499.62/104,548
  6. Step 6: Final answer
    x = 42,970.80

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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.