Home / 83,390.28-115,077.48-45,664.56

Finding the Fourth Proportional to 83,390.28, 115,077.48 and 45,664.56

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Solution

The fourth proportional to 83,390.28, 115,077.48 and 45,664.56 is: 63,016.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,390.28 : 115,077.48 = 45,664.56 : x
  2. Step 2: Convert to fraction form
    83,390.28/115,077.48 = 45,664.56/x
  3. Step 3: Cross multiply
    83,390.28x = 115,077.48 × 45,664.56
  4. Step 4: Simplify right side
    83,390.28x = 5,254,962,490.11
  5. Step 5: Solve for x
    x = 5,254,962,490.11/83,390.28
  6. Step 6: Final answer
    x = 63,016.49

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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.