Home / 105,734.49-145,917.81-57,989.58

Finding the Fourth Proportional to 105,734.49, 145,917.81 and 57,989.58

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Solution

The fourth proportional to 105,734.49, 145,917.81 and 57,989.58 is: 80,027.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,734.49 : 145,917.81 = 57,989.58 : x
  2. Step 2: Convert to fraction form
    105,734.49/145,917.81 = 57,989.58/x
  3. Step 3: Cross multiply
    105,734.49x = 145,917.81 × 57,989.58
  4. Step 4: Simplify right side
    105,734.49x = 8,461,712,516.42
  5. Step 5: Solve for x
    x = 8,461,712,516.42/105,734.49
  6. Step 6: Final answer
    x = 80,027.93

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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.