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Finding the Fourth Proportional to 84,873, 127,337.58 and 45,421.32

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Solution

The fourth proportional to 84,873, 127,337.58 and 45,421.32 is: 68,147.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,873 : 127,337.58 = 45,421.32 : x
  2. Step 2: Convert to fraction form
    84,873/127,337.58 = 45,421.32/x
  3. Step 3: Cross multiply
    84,873x = 127,337.58 × 45,421.32
  4. Step 4: Simplify right side
    84,873x = 5,783,840,969.21
  5. Step 5: Solve for x
    x = 5,783,840,969.21/84,873
  6. Step 6: Final answer
    x = 68,147.01

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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.