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Finding the Fourth Proportional to 72,837.01, 100,514.78 and 40,572.01

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Solution

The fourth proportional to 72,837.01, 100,514.78 and 40,572.01 is: 55,989.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,837.01 : 100,514.78 = 40,572.01 : x
  2. Step 2: Convert to fraction form
    72,837.01/100,514.78 = 40,572.01/x
  3. Step 3: Cross multiply
    72,837.01x = 100,514.78 × 40,572.01
  4. Step 4: Simplify right side
    72,837.01x = 4,078,086,599.05
  5. Step 5: Solve for x
    x = 4,078,086,599.05/72,837.01
  6. Step 6: Final answer
    x = 55,989.21

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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.