Home / 81,071.10-121,607.06-36,645.84

Finding the Fourth Proportional to 81,071.10, 121,607.06 and 36,645.84

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Solution

The fourth proportional to 81,071.10, 121,607.06 and 36,645.84 is: 54,968.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,071.10 : 121,607.06 = 36,645.84 : x
  2. Step 2: Convert to fraction form
    81,071.10/121,607.06 = 36,645.84/x
  3. Step 3: Cross multiply
    81,071.10x = 121,607.06 × 36,645.84
  4. Step 4: Simplify right side
    81,071.10x = 4,456,392,680.40
  5. Step 5: Solve for x
    x = 4,456,392,680.40/81,071.10
  6. Step 6: Final answer
    x = 54,968.94

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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.