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Finding the Fourth Proportional to 72,633.89, 100,244.11 and 40,802.81

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Solution

The fourth proportional to 72,633.89, 100,244.11 and 40,802.81 is: 56,313.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,633.89 : 100,244.11 = 40,802.81 : x
  2. Step 2: Convert to fraction form
    72,633.89/100,244.11 = 40,802.81/x
  3. Step 3: Cross multiply
    72,633.89x = 100,244.11 × 40,802.81
  4. Step 4: Simplify right side
    72,633.89x = 4,090,241,373.95
  5. Step 5: Solve for x
    x = 4,090,241,373.95/72,633.89
  6. Step 6: Final answer
    x = 56,313.13

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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.