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Finding the Fourth Proportional to 72,240.68, 108,360.48 and 19,649.72

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Solution

The fourth proportional to 72,240.68, 108,360.48 and 19,649.72 is: 29,474.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,240.68 : 108,360.48 = 19,649.72 : x
  2. Step 2: Convert to fraction form
    72,240.68/108,360.48 = 19,649.72/x
  3. Step 3: Cross multiply
    72,240.68x = 108,360.48 × 19,649.72
  4. Step 4: Simplify right side
    72,240.68x = 2,129,253,091.07
  5. Step 5: Solve for x
    x = 2,129,253,091.07/72,240.68
  6. Step 6: Final answer
    x = 29,474.43

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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.