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Finding the Fourth Proportional to 72,160.54, 99,517.06 and 45,305.54

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Solution

The fourth proportional to 72,160.54, 99,517.06 and 45,305.54 is: 62,481.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,160.54 : 99,517.06 = 45,305.54 : x
  2. Step 2: Convert to fraction form
    72,160.54/99,517.06 = 45,305.54/x
  3. Step 3: Cross multiply
    72,160.54x = 99,517.06 × 45,305.54
  4. Step 4: Simplify right side
    72,160.54x = 4,508,674,142.51
  5. Step 5: Solve for x
    x = 4,508,674,142.51/72,160.54
  6. Step 6: Final answer
    x = 62,481.16

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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.