Home / 83,989.60-115,905.81-45,749.03

Finding the Fourth Proportional to 83,989.60, 115,905.81 and 45,749.03

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Solution

The fourth proportional to 83,989.60, 115,905.81 and 45,749.03 is: 63,133.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,989.60 : 115,905.81 = 45,749.03 : x
  2. Step 2: Convert to fraction form
    83,989.60/115,905.81 = 45,749.03/x
  3. Step 3: Cross multiply
    83,989.60x = 115,905.81 × 45,749.03
  4. Step 4: Simplify right side
    83,989.60x = 5,302,578,378.86
  5. Step 5: Solve for x
    x = 5,302,578,378.86/83,989.60
  6. Step 6: Final answer
    x = 63,133.75

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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.