Home / 83,968.28-115,899.36-57,155.68

Finding the Fourth Proportional to 83,968.28, 115,899.36 and 57,155.68

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Solution

The fourth proportional to 83,968.28, 115,899.36 and 57,155.68 is: 78,890.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,968.28 : 115,899.36 = 57,155.68 : x
  2. Step 2: Convert to fraction form
    83,968.28/115,899.36 = 57,155.68/x
  3. Step 3: Cross multiply
    83,968.28x = 115,899.36 × 57,155.68
  4. Step 4: Simplify right side
    83,968.28x = 6,624,306,732.36
  5. Step 5: Solve for x
    x = 6,624,306,732.36/83,968.28
  6. Step 6: Final answer
    x = 78,890.59

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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.