Home / 86,431.12-129,635.74-33,877.51

Finding the Fourth Proportional to 86,431.12, 129,635.74 and 33,877.51

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Solution

The fourth proportional to 86,431.12, 129,635.74 and 33,877.51 is: 50,811.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,431.12 : 129,635.74 = 33,877.51 : x
  2. Step 2: Convert to fraction form
    86,431.12/129,635.74 = 33,877.51/x
  3. Step 3: Cross multiply
    86,431.12x = 129,635.74 × 33,877.51
  4. Step 4: Simplify right side
    86,431.12x = 4,391,735,796.46
  5. Step 5: Solve for x
    x = 4,391,735,796.46/86,431.12
  6. Step 6: Final answer
    x = 50,811.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.