Home / 83,735.28-115,460.46-64,571.76

Finding the Fourth Proportional to 83,735.28, 115,460.46 and 64,571.76

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Solution

The fourth proportional to 83,735.28, 115,460.46 and 64,571.76 is: 89,036.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,735.28 : 115,460.46 = 64,571.76 : x
  2. Step 2: Convert to fraction form
    83,735.28/115,460.46 = 64,571.76/x
  3. Step 3: Cross multiply
    83,735.28x = 115,460.46 × 64,571.76
  4. Step 4: Simplify right side
    83,735.28x = 7,455,485,112.61
  5. Step 5: Solve for x
    x = 7,455,485,112.61/83,735.28
  6. Step 6: Final answer
    x = 89,036.37

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1.5x scale

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.