Home / 105,262.64-145,262.09-57,516.38

Finding the Fourth Proportional to 105,262.64, 145,262.09 and 57,516.38

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Solution

The fourth proportional to 105,262.64, 145,262.09 and 57,516.38 is: 79,372.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,262.64 : 145,262.09 = 57,516.38 : x
  2. Step 2: Convert to fraction form
    105,262.64/145,262.09 = 57,516.38/x
  3. Step 3: Cross multiply
    105,262.64x = 145,262.09 × 57,516.38
  4. Step 4: Simplify right side
    105,262.64x = 8,354,948,554.14
  5. Step 5: Solve for x
    x = 8,354,948,554.14/105,262.64
  6. Step 6: Final answer
    x = 79,372.41

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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.