Home / 83,702.30-115,529.10-47,913

Finding the Fourth Proportional to 83,702.30, 115,529.10 and 47,913

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Solution

The fourth proportional to 83,702.30, 115,529.10 and 47,913 is: 66,131.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,702.30 : 115,529.10 = 47,913 : x
  2. Step 2: Convert to fraction form
    83,702.30/115,529.10 = 47,913/x
  3. Step 3: Cross multiply
    83,702.30x = 115,529.10 × 47,913
  4. Step 4: Simplify right side
    83,702.30x = 5,535,345,768.30
  5. Step 5: Solve for x
    x = 5,535,345,768.30/83,702.30
  6. Step 6: Final answer
    x = 66,131.35

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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.