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Finding the Fourth Proportional to 73,011.70, 100,756.14 and 39,477.70

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Solution

The fourth proportional to 73,011.70, 100,756.14 and 39,477.70 is: 54,479.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,011.70 : 100,756.14 = 39,477.70 : x
  2. Step 2: Convert to fraction form
    73,011.70/100,756.14 = 39,477.70/x
  3. Step 3: Cross multiply
    73,011.70x = 100,756.14 × 39,477.70
  4. Step 4: Simplify right side
    73,011.70x = 3,977,620,668.08
  5. Step 5: Solve for x
    x = 3,977,620,668.08/73,011.70
  6. Step 6: Final answer
    x = 54,479.22

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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.