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Finding the Fourth Proportional to 72,244.01, 99,701.99 and 40,423.16

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Solution

The fourth proportional to 72,244.01, 99,701.99 and 40,423.16 is: 55,786.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,244.01 : 99,701.99 = 40,423.16 : x
  2. Step 2: Convert to fraction form
    72,244.01/99,701.99 = 40,423.16/x
  3. Step 3: Cross multiply
    72,244.01x = 99,701.99 × 40,423.16
  4. Step 4: Simplify right side
    72,244.01x = 4,030,269,494.09
  5. Step 5: Solve for x
    x = 4,030,269,494.09/72,244.01
  6. Step 6: Final answer
    x = 55,786.90

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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.