Home / 85,633.47-128,447.13-22,453.11

Finding the Fourth Proportional to 85,633.47, 128,447.13 and 22,453.11

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Solution

The fourth proportional to 85,633.47, 128,447.13 and 22,453.11 is: 33,678.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,633.47 : 128,447.13 = 22,453.11 : x
  2. Step 2: Convert to fraction form
    85,633.47/128,447.13 = 22,453.11/x
  3. Step 3: Cross multiply
    85,633.47x = 128,447.13 × 22,453.11
  4. Step 4: Simplify right side
    85,633.47x = 2,884,037,539.07
  5. Step 5: Solve for x
    x = 2,884,037,539.07/85,633.47
  6. Step 6: Final answer
    x = 33,678.86

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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.