Home / 40,910.84-61,316.04-21,178.16

Finding the Fourth Proportional to 40,910.84, 61,316.04 and 21,178.16

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Solution

The fourth proportional to 40,910.84, 61,316.04 and 21,178.16 is: 31,741.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,910.84 : 61,316.04 = 21,178.16 : x
  2. Step 2: Convert to fraction form
    40,910.84/61,316.04 = 21,178.16/x
  3. Step 3: Cross multiply
    40,910.84x = 61,316.04 × 21,178.16
  4. Step 4: Simplify right side
    40,910.84x = 1,298,560,905.69
  5. Step 5: Solve for x
    x = 1,298,560,905.69/40,910.84
  6. Step 6: Final answer
    x = 31,741.24

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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.