Home / 105,308.31-145,324.94-57,564.39

Finding the Fourth Proportional to 105,308.31, 145,324.94 and 57,564.39

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Solution

The fourth proportional to 105,308.31, 145,324.94 and 57,564.39 is: 79,438.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,308.31 : 145,324.94 = 57,564.39 : x
  2. Step 2: Convert to fraction form
    105,308.31/145,324.94 = 57,564.39/x
  3. Step 3: Cross multiply
    105,308.31x = 145,324.94 × 57,564.39
  4. Step 4: Simplify right side
    105,308.31x = 8,365,541,235.06
  5. Step 5: Solve for x
    x = 8,365,541,235.06/105,308.31
  6. Step 6: Final answer
    x = 79,438.57

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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.