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Finding the Fourth Proportional to 72,000.60, 108,000.90 and 52,186.20

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Solution

The fourth proportional to 72,000.60, 108,000.90 and 52,186.20 is: 78,279.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,000.60 : 108,000.90 = 52,186.20 : x
  2. Step 2: Convert to fraction form
    72,000.60/108,000.90 = 52,186.20/x
  3. Step 3: Cross multiply
    72,000.60x = 108,000.90 × 52,186.20
  4. Step 4: Simplify right side
    72,000.60x = 5,636,156,567.58
  5. Step 5: Solve for x
    x = 5,636,156,567.58/72,000.60
  6. Step 6: Final answer
    x = 78,279.30

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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.