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Finding the Fourth Proportional to 85,157.28, 127,604.52 and 53,926.92

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Solution

The fourth proportional to 85,157.28, 127,604.52 and 53,926.92 is: 80,807.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,157.28 : 127,604.52 = 53,926.92 : x
  2. Step 2: Convert to fraction form
    85,157.28/127,604.52 = 53,926.92/x
  3. Step 3: Cross multiply
    85,157.28x = 127,604.52 × 53,926.92
  4. Step 4: Simplify right side
    85,157.28x = 6,881,318,741.68
  5. Step 5: Solve for x
    x = 6,881,318,741.68/85,157.28
  6. Step 6: Final answer
    x = 80,807.17

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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.