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Finding the Fourth Proportional to 81,814.99, 112,960.59 and 62,660.92

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Solution

The fourth proportional to 81,814.99, 112,960.59 and 62,660.92 is: 86,514.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,814.99 : 112,960.59 = 62,660.92 : x
  2. Step 2: Convert to fraction form
    81,814.99/112,960.59 = 62,660.92/x
  3. Step 3: Cross multiply
    81,814.99x = 112,960.59 × 62,660.92
  4. Step 4: Simplify right side
    81,814.99x = 7,078,214,493.14
  5. Step 5: Solve for x
    x = 7,078,214,493.14/81,814.99
  6. Step 6: Final answer
    x = 86,514.89

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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.