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Finding the Fourth Proportional to 72,649.35, 108,890.19 and 33,210.45

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Solution

The fourth proportional to 72,649.35, 108,890.19 and 33,210.45 is: 49,777.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,649.35 : 108,890.19 = 33,210.45 : x
  2. Step 2: Convert to fraction form
    72,649.35/108,890.19 = 33,210.45/x
  3. Step 3: Cross multiply
    72,649.35x = 108,890.19 × 33,210.45
  4. Step 4: Simplify right side
    72,649.35x = 3,616,292,210.49
  5. Step 5: Solve for x
    x = 3,616,292,210.49/72,649.35
  6. Step 6: Final answer
    x = 49,777.35

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1.5x scale

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.