Home / 81,601.89-122,328.99-28,999.08

Finding the Fourth Proportional to 81,601.89, 122,328.99 and 28,999.08

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Solution

The fourth proportional to 81,601.89, 122,328.99 and 28,999.08 is: 43,472.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,601.89 : 122,328.99 = 28,999.08 : x
  2. Step 2: Convert to fraction form
    81,601.89/122,328.99 = 28,999.08/x
  3. Step 3: Cross multiply
    81,601.89x = 122,328.99 × 28,999.08
  4. Step 4: Simplify right side
    81,601.89x = 3,547,428,167.33
  5. Step 5: Solve for x
    x = 3,547,428,167.33/81,601.89
  6. Step 6: Final answer
    x = 43,472.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.