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Finding the Fourth Proportional to 73,089.77, 100,863.89 and 39,555.77

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Solution

The fourth proportional to 73,089.77, 100,863.89 and 39,555.77 is: 54,586.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,089.77 : 100,863.89 = 39,555.77 : x
  2. Step 2: Convert to fraction form
    73,089.77/100,863.89 = 39,555.77/x
  3. Step 3: Cross multiply
    73,089.77x = 100,863.89 × 39,555.77
  4. Step 4: Simplify right side
    73,089.77x = 3,989,748,132.05
  5. Step 5: Solve for x
    x = 3,989,748,132.05/73,089.77
  6. Step 6: Final answer
    x = 54,586.96

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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.