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Finding the Fourth Proportional to 81,328.99, 112,233.99 and 45,519.00

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Solution

The fourth proportional to 81,328.99, 112,233.99 and 45,519.00 is: 62,816.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,328.99 : 112,233.99 = 45,519.00 : x
  2. Step 2: Convert to fraction form
    81,328.99/112,233.99 = 45,519.00/x
  3. Step 3: Cross multiply
    81,328.99x = 112,233.99 × 45,519.00
  4. Step 4: Simplify right side
    81,328.99x = 5,108,778,484.58
  5. Step 5: Solve for x
    x = 5,108,778,484.58/81,328.99
  6. Step 6: Final answer
    x = 62,816.21

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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.