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Finding the Fourth Proportional to 73,191.40, 109,713.08 and 28,800.77

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Solution

The fourth proportional to 73,191.40, 109,713.08 and 28,800.77 is: 43,172.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,191.40 : 109,713.08 = 28,800.77 : x
  2. Step 2: Convert to fraction form
    73,191.40/109,713.08 = 28,800.77/x
  3. Step 3: Cross multiply
    73,191.40x = 109,713.08 × 28,800.77
  4. Step 4: Simplify right side
    73,191.40x = 3,159,820,706.51
  5. Step 5: Solve for x
    x = 3,159,820,706.51/73,191.40
  6. Step 6: Final answer
    x = 43,172.02

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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.