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Finding the Fourth Proportional to 73,448.99, 100,699.49 and 72,120.39

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Solution

The fourth proportional to 73,448.99, 100,699.49 and 72,120.39 is: 98,877.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,448.99 : 100,699.49 = 72,120.39 : x
  2. Step 2: Convert to fraction form
    73,448.99/100,699.49 = 72,120.39/x
  3. Step 3: Cross multiply
    73,448.99x = 100,699.49 × 72,120.39
  4. Step 4: Simplify right side
    73,448.99x = 7,262,486,023.83
  5. Step 5: Solve for x
    x = 7,262,486,023.83/73,448.99
  6. Step 6: Final answer
    x = 98,877.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.