Home / 83,618.49-115,415.64-51,769.29

Finding the Fourth Proportional to 83,618.49, 115,415.64 and 51,769.29

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Solution

The fourth proportional to 83,618.49, 115,415.64 and 51,769.29 is: 71,455.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,618.49 : 115,415.64 = 51,769.29 : x
  2. Step 2: Convert to fraction form
    83,618.49/115,415.64 = 51,769.29/x
  3. Step 3: Cross multiply
    83,618.49x = 115,415.64 × 51,769.29
  4. Step 4: Simplify right side
    83,618.49x = 5,974,985,737.70
  5. Step 5: Solve for x
    x = 5,974,985,737.70/83,618.49
  6. Step 6: Final answer
    x = 71,455.32

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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.