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Finding the Fourth Proportional to 84,722.65, 116,821.38 and 54,054.70

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Solution

The fourth proportional to 84,722.65, 116,821.38 and 54,054.70 is: 74,534.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,722.65 : 116,821.38 = 54,054.70 : x
  2. Step 2: Convert to fraction form
    84,722.65/116,821.38 = 54,054.70/x
  3. Step 3: Cross multiply
    84,722.65x = 116,821.38 × 54,054.70
  4. Step 4: Simplify right side
    84,722.65x = 6,314,744,560.14
  5. Step 5: Solve for x
    x = 6,314,744,560.14/84,722.65
  6. Step 6: Final answer
    x = 74,534.32

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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.