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Finding the Fourth Proportional to 81,602.95, 122,405.77 and 28,296.62

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Solution

The fourth proportional to 81,602.95, 122,405.77 and 28,296.62 is: 42,445.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,602.95 : 122,405.77 = 28,296.62 : x
  2. Step 2: Convert to fraction form
    81,602.95/122,405.77 = 28,296.62/x
  3. Step 3: Cross multiply
    81,602.95x = 122,405.77 × 28,296.62
  4. Step 4: Simplify right side
    81,602.95x = 3,463,669,467.48
  5. Step 5: Solve for x
    x = 3,463,669,467.48/81,602.95
  6. Step 6: Final answer
    x = 42,445.40

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1.5x scale

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.