Home / 83,932.80-115,776-65,999.04

Finding the Fourth Proportional to 83,932.80, 115,776 and 65,999.04

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Solution

The fourth proportional to 83,932.80, 115,776 and 65,999.04 is: 91,038.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,932.80 : 115,776 = 65,999.04 : x
  2. Step 2: Convert to fraction form
    83,932.80/115,776 = 65,999.04/x
  3. Step 3: Cross multiply
    83,932.80x = 115,776 × 65,999.04
  4. Step 4: Simplify right side
    83,932.80x = 7,641,104,855.04
  5. Step 5: Solve for x
    x = 7,641,104,855.04/83,932.80
  6. Step 6: Final answer
    x = 91,038.36

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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.