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Finding the Fourth Proportional to 82,910.79, 114,419.12 and 45,187.47

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Solution

The fourth proportional to 82,910.79, 114,419.12 and 45,187.47 is: 62,359.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,910.79 : 114,419.12 = 45,187.47 : x
  2. Step 2: Convert to fraction form
    82,910.79/114,419.12 = 45,187.47/x
  3. Step 3: Cross multiply
    82,910.79x = 114,419.12 × 45,187.47
  4. Step 4: Simplify right side
    82,910.79x = 5,170,310,326.49
  5. Step 5: Solve for x
    x = 5,170,310,326.49/82,910.79
  6. Step 6: Final answer
    x = 62,359.92

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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.