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Finding the Fourth Proportional to 67,220.40, 100,852.20 and 45,058.80

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Solution

The fourth proportional to 67,220.40, 100,852.20 and 45,058.80 is: 67,602.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,220.40 : 100,852.20 = 45,058.80 : x
  2. Step 2: Convert to fraction form
    67,220.40/100,852.20 = 45,058.80/x
  3. Step 3: Cross multiply
    67,220.40x = 100,852.20 × 45,058.80
  4. Step 4: Simplify right side
    67,220.40x = 4,544,279,109.36
  5. Step 5: Solve for x
    x = 4,544,279,109.36/67,220.40
  6. Step 6: Final answer
    x = 67,602.68

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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.