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Finding the Fourth Proportional to 81,602.84, 122,416.59 and 28,999.82

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Solution

The fourth proportional to 81,602.84, 122,416.59 and 28,999.82 is: 43,504.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,602.84 : 122,416.59 = 28,999.82 : x
  2. Step 2: Convert to fraction form
    81,602.84/122,416.59 = 28,999.82/x
  3. Step 3: Cross multiply
    81,602.84x = 122,416.59 × 28,999.82
  4. Step 4: Simplify right side
    81,602.84x = 3,550,059,075.01
  5. Step 5: Solve for x
    x = 3,550,059,075.01/81,602.84
  6. Step 6: Final answer
    x = 43,504.11

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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.