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Finding the Fourth Proportional to 72,266.79, 108,416.13 and 21,663.81

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Solution

The fourth proportional to 72,266.79, 108,416.13 and 21,663.81 is: 32,500.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,266.79 : 108,416.13 = 21,663.81 : x
  2. Step 2: Convert to fraction form
    72,266.79/108,416.13 = 21,663.81/x
  3. Step 3: Cross multiply
    72,266.79x = 108,416.13 × 21,663.81
  4. Step 4: Simplify right side
    72,266.79x = 2,348,706,441.26
  5. Step 5: Solve for x
    x = 2,348,706,441.26/72,266.79
  6. Step 6: Final answer
    x = 32,500.49

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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.