Home / 81,853.98-112,974-51,241.30

Finding the Fourth Proportional to 81,853.98, 112,974 and 51,241.30

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Solution

The fourth proportional to 81,853.98, 112,974 and 51,241.30 is: 70,722.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,853.98 : 112,974 = 51,241.30 : x
  2. Step 2: Convert to fraction form
    81,853.98/112,974 = 51,241.30/x
  3. Step 3: Cross multiply
    81,853.98x = 112,974 × 51,241.30
  4. Step 4: Simplify right side
    81,853.98x = 5,788,934,626.20
  5. Step 5: Solve for x
    x = 5,788,934,626.20/81,853.98
  6. Step 6: Final answer
    x = 70,722.70

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1.5x scale

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.