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Finding the Fourth Proportional to 84,098.86, 115,935.86 and 66,162.76

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Solution

The fourth proportional to 84,098.86, 115,935.86 and 66,162.76 is: 91,209.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,098.86 : 115,935.86 = 66,162.76 : x
  2. Step 2: Convert to fraction form
    84,098.86/115,935.86 = 66,162.76/x
  3. Step 3: Cross multiply
    84,098.86x = 115,935.86 × 66,162.76
  4. Step 4: Simplify right side
    84,098.86x = 7,670,636,480.57
  5. Step 5: Solve for x
    x = 7,670,636,480.57/84,098.86
  6. Step 6: Final answer
    x = 91,209.76

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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.