Home / 80,962.84-121,415.09-34,219.36

Finding the Fourth Proportional to 80,962.84, 121,415.09 and 34,219.36

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Solution

The fourth proportional to 80,962.84, 121,415.09 and 34,219.36 is: 51,316.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,962.84 : 121,415.09 = 34,219.36 : x
  2. Step 2: Convert to fraction form
    80,962.84/121,415.09 = 34,219.36/x
  3. Step 3: Cross multiply
    80,962.84x = 121,415.09 × 34,219.36
  4. Step 4: Simplify right side
    80,962.84x = 4,154,746,654.81
  5. Step 5: Solve for x
    x = 4,154,746,654.81/80,962.84
  6. Step 6: Final answer
    x = 51,316.71

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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.