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Finding the Fourth Proportional to 84,851.10, 127,276.65 and 55,326.60

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Solution

The fourth proportional to 84,851.10, 127,276.65 and 55,326.60 is: 82,989.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,851.10 : 127,276.65 = 55,326.60 : x
  2. Step 2: Convert to fraction form
    84,851.10/127,276.65 = 55,326.60/x
  3. Step 3: Cross multiply
    84,851.10x = 127,276.65 × 55,326.60
  4. Step 4: Simplify right side
    84,851.10x = 7,041,784,303.89
  5. Step 5: Solve for x
    x = 7,041,784,303.89/84,851.10
  6. Step 6: Final answer
    x = 82,989.90

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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.