Home / 71,982.10-99,330.78-39,717.10

Finding the Fourth Proportional to 71,982.10, 99,330.78 and 39,717.10

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Solution

The fourth proportional to 71,982.10, 99,330.78 and 39,717.10 is: 54,807.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,982.10 : 99,330.78 = 39,717.10 : x
  2. Step 2: Convert to fraction form
    71,982.10/99,330.78 = 39,717.10/x
  3. Step 3: Cross multiply
    71,982.10x = 99,330.78 × 39,717.10
  4. Step 4: Simplify right side
    71,982.10x = 3,945,130,522.34
  5. Step 5: Solve for x
    x = 3,945,130,522.34/71,982.10
  6. Step 6: Final answer
    x = 54,807.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.