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Finding the Fourth Proportional to 72,558.38, 100,125.07 and 40,721.13

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Solution

The fourth proportional to 72,558.38, 100,125.07 and 40,721.13 is: 56,192.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,558.38 : 100,125.07 = 40,721.13 : x
  2. Step 2: Convert to fraction form
    72,558.38/100,125.07 = 40,721.13/x
  3. Step 3: Cross multiply
    72,558.38x = 100,125.07 × 40,721.13
  4. Step 4: Simplify right side
    72,558.38x = 4,077,205,991.73
  5. Step 5: Solve for x
    x = 4,077,205,991.73/72,558.38
  6. Step 6: Final answer
    x = 56,192.08

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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.