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Finding the Fourth Proportional to 76,491.69, 105,524.65 and 50,973.20

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Solution

The fourth proportional to 76,491.69, 105,524.65 and 50,973.20 is: 70,320.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,491.69 : 105,524.65 = 50,973.20 : x
  2. Step 2: Convert to fraction form
    76,491.69/105,524.65 = 50,973.20/x
  3. Step 3: Cross multiply
    76,491.69x = 105,524.65 × 50,973.20
  4. Step 4: Simplify right side
    76,491.69x = 5,378,928,877.83
  5. Step 5: Solve for x
    x = 5,378,928,877.83/76,491.69
  6. Step 6: Final answer
    x = 70,320.43

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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.