Home / 84,825.92-117,091.20-72,841.16

Finding the Fourth Proportional to 84,825.92, 117,091.20 and 72,841.16

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Solution

The fourth proportional to 84,825.92, 117,091.20 and 72,841.16 is: 100,547.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,825.92 : 117,091.20 = 72,841.16 : x
  2. Step 2: Convert to fraction form
    84,825.92/117,091.20 = 72,841.16/x
  3. Step 3: Cross multiply
    84,825.92x = 117,091.20 × 72,841.16
  4. Step 4: Simplify right side
    84,825.92x = 8,529,058,833.79
  5. Step 5: Solve for x
    x = 8,529,058,833.79/84,825.92
  6. Step 6: Final answer
    x = 100,547.79

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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.