Home / 84,977.40-127,466.10-76,812.60

Finding the Fourth Proportional to 84,977.40, 127,466.10 and 76,812.60

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Solution

The fourth proportional to 84,977.40, 127,466.10 and 76,812.60 is: 115,218.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,977.40 : 127,466.10 = 76,812.60 : x
  2. Step 2: Convert to fraction form
    84,977.40/127,466.10 = 76,812.60/x
  3. Step 3: Cross multiply
    84,977.40x = 127,466.10 × 76,812.60
  4. Step 4: Simplify right side
    84,977.40x = 9,791,002,552.86
  5. Step 5: Solve for x
    x = 9,791,002,552.86/84,977.40
  6. Step 6: Final answer
    x = 115,218.90

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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.