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Finding the Fourth Proportional to 73,011.76, 100,756.40 and 42,791.08

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Solution

The fourth proportional to 73,011.76, 100,756.40 and 42,791.08 is: 59,051.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,011.76 : 100,756.40 = 42,791.08 : x
  2. Step 2: Convert to fraction form
    73,011.76/100,756.40 = 42,791.08/x
  3. Step 3: Cross multiply
    73,011.76x = 100,756.40 × 42,791.08
  4. Step 4: Simplify right side
    73,011.76x = 4,311,475,172.91
  5. Step 5: Solve for x
    x = 4,311,475,172.91/73,011.76
  6. Step 6: Final answer
    x = 59,051.79

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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.