Home / 105,735.78-145,917.25-57,988.71

Finding the Fourth Proportional to 105,735.78, 145,917.25 and 57,988.71

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Solution

The fourth proportional to 105,735.78, 145,917.25 and 57,988.71 is: 80,025.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,735.78 : 145,917.25 = 57,988.71 : x
  2. Step 2: Convert to fraction form
    105,735.78/145,917.25 = 57,988.71/x
  3. Step 3: Cross multiply
    105,735.78x = 145,917.25 × 57,988.71
  4. Step 4: Simplify right side
    105,735.78x = 8,461,552,949.28
  5. Step 5: Solve for x
    x = 8,461,552,949.28/105,735.78
  6. Step 6: Final answer
    x = 80,025.45

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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.