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Finding the Fourth Proportional to 84,245.64, 116,081.76 and 57,340.68

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Solution

The fourth proportional to 84,245.64, 116,081.76 and 57,340.68 is: 79,009.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,245.64 : 116,081.76 = 57,340.68 : x
  2. Step 2: Convert to fraction form
    84,245.64/116,081.76 = 57,340.68/x
  3. Step 3: Cross multiply
    84,245.64x = 116,081.76 × 57,340.68
  4. Step 4: Simplify right side
    84,245.64x = 6,656,207,054.00
  5. Step 5: Solve for x
    x = 6,656,207,054.00/84,245.64
  6. Step 6: Final answer
    x = 79,009.51

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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.