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Finding the Fourth Proportional to 72,052.80, 108,200.70 and 60,194.40

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Solution

The fourth proportional to 72,052.80, 108,200.70 and 60,194.40 is: 90,393.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,052.80 : 108,200.70 = 60,194.40 : x
  2. Step 2: Convert to fraction form
    72,052.80/108,200.70 = 60,194.40/x
  3. Step 3: Cross multiply
    72,052.80x = 108,200.70 × 60,194.40
  4. Step 4: Simplify right side
    72,052.80x = 6,513,076,216.08
  5. Step 5: Solve for x
    x = 6,513,076,216.08/72,052.80
  6. Step 6: Final answer
    x = 90,393.10

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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.