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Finding the Fourth Proportional to 84,046.96, 115,981.86 and 45,805.72

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Solution

The fourth proportional to 84,046.96, 115,981.86 and 45,805.72 is: 63,210.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,046.96 : 115,981.86 = 45,805.72 : x
  2. Step 2: Convert to fraction form
    84,046.96/115,981.86 = 45,805.72/x
  3. Step 3: Cross multiply
    84,046.96x = 115,981.86 × 45,805.72
  4. Step 4: Simplify right side
    84,046.96x = 5,312,632,604.24
  5. Step 5: Solve for x
    x = 5,312,632,604.24/84,046.96
  6. Step 6: Final answer
    x = 63,210.29

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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.