Home / 81,063.28-111,779.16-52,716.40

Finding the Fourth Proportional to 81,063.28, 111,779.16 and 52,716.40

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Solution

The fourth proportional to 81,063.28, 111,779.16 and 52,716.40 is: 72,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,063.28 : 111,779.16 = 52,716.40 : x
  2. Step 2: Convert to fraction form
    81,063.28/111,779.16 = 52,716.40/x
  3. Step 3: Cross multiply
    81,063.28x = 111,779.16 × 52,716.40
  4. Step 4: Simplify right side
    81,063.28x = 5,892,594,910.22
  5. Step 5: Solve for x
    x = 5,892,594,910.22/81,063.28
  6. Step 6: Final answer
    x = 72,691.30

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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.