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Finding the Fourth Proportional to 81,618.33, 112,644.28 and 45,810.30

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Solution

The fourth proportional to 81,618.33, 112,644.28 and 45,810.30 is: 63,224.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,618.33 : 112,644.28 = 45,810.30 : x
  2. Step 2: Convert to fraction form
    81,618.33/112,644.28 = 45,810.30/x
  3. Step 3: Cross multiply
    81,618.33x = 112,644.28 × 45,810.30
  4. Step 4: Simplify right side
    81,618.33x = 5,160,268,260.08
  5. Step 5: Solve for x
    x = 5,160,268,260.08/81,618.33
  6. Step 6: Final answer
    x = 63,224.38

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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.