Home / 82,027.40-113,311.86-77,770.04

Finding the Fourth Proportional to 82,027.40, 113,311.86 and 77,770.04

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Solution

The fourth proportional to 82,027.40, 113,311.86 and 77,770.04 is: 107,430.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,027.40 : 113,311.86 = 77,770.04 : x
  2. Step 2: Convert to fraction form
    82,027.40/113,311.86 = 77,770.04/x
  3. Step 3: Cross multiply
    82,027.40x = 113,311.86 × 77,770.04
  4. Step 4: Simplify right side
    82,027.40x = 8,812,267,884.67
  5. Step 5: Solve for x
    x = 8,812,267,884.67/82,027.40
  6. Step 6: Final answer
    x = 107,430.78

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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.