Home / 84,977.10-127,461.60-28,811.70

Finding the Fourth Proportional to 84,977.10, 127,461.60 and 28,811.70

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Solution

The fourth proportional to 84,977.10, 127,461.60 and 28,811.70 is: 43,216.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,977.10 : 127,461.60 = 28,811.70 : x
  2. Step 2: Convert to fraction form
    84,977.10/127,461.60 = 28,811.70/x
  3. Step 3: Cross multiply
    84,977.10x = 127,461.60 × 28,811.70
  4. Step 4: Simplify right side
    84,977.10x = 3,672,385,380.72
  5. Step 5: Solve for x
    x = 3,672,385,380.72/84,977.10
  6. Step 6: Final answer
    x = 43,216.18

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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.