Home / 83,743.28-115,471.50-64,579.76

Finding the Fourth Proportional to 83,743.28, 115,471.50 and 64,579.76

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Solution

The fourth proportional to 83,743.28, 115,471.50 and 64,579.76 is: 89,047.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,743.28 : 115,471.50 = 64,579.76 : x
  2. Step 2: Convert to fraction form
    83,743.28/115,471.50 = 64,579.76/x
  3. Step 3: Cross multiply
    83,743.28x = 115,471.50 × 64,579.76
  4. Step 4: Simplify right side
    83,743.28x = 7,457,121,756.84
  5. Step 5: Solve for x
    x = 7,457,121,756.84/83,743.28
  6. Step 6: Final answer
    x = 89,047.40

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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.