Home / 72,770,809.80-109,156,214.70-52,257,187.20

Finding the Fourth Proportional to 72,770,809.80, 109,156,214.70 and 52,257,187.20

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Solution

The fourth proportional to 72,770,809.80, 109,156,214.70 and 52,257,187.20 is: 78,385,780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,770,809.80 : 109,156,214.70 = 52,257,187.20 : x
  2. Step 2: Convert to fraction form
    72,770,809.80/109,156,214.70 = 52,257,187.20/x
  3. Step 3: Cross multiply
    72,770,809.80x = 109,156,214.70 × 52,257,187.20
  4. Step 4: Simplify right side
    72,770,809.80x = 5,704,196,745,621,292
  5. Step 5: Solve for x
    x = 5,704,196,745,621,292/72,770,809.80
  6. Step 6: Final answer
    x = 78,385,780.80

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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.