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Finding the Fourth Proportional to 82,885.68, 114,380.64 and 45,159.12

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Solution

The fourth proportional to 82,885.68, 114,380.64 and 45,159.12 is: 62,318.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,885.68 : 114,380.64 = 45,159.12 : x
  2. Step 2: Convert to fraction form
    82,885.68/114,380.64 = 45,159.12/x
  3. Step 3: Cross multiply
    82,885.68x = 114,380.64 × 45,159.12
  4. Step 4: Simplify right side
    82,885.68x = 5,165,329,047.44
  5. Step 5: Solve for x
    x = 5,165,329,047.44/82,885.68
  6. Step 6: Final answer
    x = 62,318.71

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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.