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Finding the Fourth Proportional to 72,859.22, 100,543.02 and 40,593.08

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Solution

The fourth proportional to 72,859.22, 100,543.02 and 40,593.08 is: 56,016.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,859.22 : 100,543.02 = 40,593.08 : x
  2. Step 2: Convert to fraction form
    72,859.22/100,543.02 = 40,593.08/x
  3. Step 3: Cross multiply
    72,859.22x = 100,543.02 × 40,593.08
  4. Step 4: Simplify right side
    72,859.22x = 4,081,350,854.30
  5. Step 5: Solve for x
    x = 4,081,350,854.30/72,859.22
  6. Step 6: Final answer
    x = 56,016.94

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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.