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Finding the Fourth Proportional to 72,903.71, 109,355.56 and 17,499.71

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Solution

The fourth proportional to 72,903.71, 109,355.56 and 17,499.71 is: 26,249.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,903.71 : 109,355.56 = 17,499.71 : x
  2. Step 2: Convert to fraction form
    72,903.71/109,355.56 = 17,499.71/x
  3. Step 3: Cross multiply
    72,903.71x = 109,355.56 × 17,499.71
  4. Step 4: Simplify right side
    72,903.71x = 1,913,690,816.53
  5. Step 5: Solve for x
    x = 1,913,690,816.53/72,903.71
  6. Step 6: Final answer
    x = 26,249.57

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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.