Home / 72,771,387.80-109,157,081.70-66,819,248.60

Finding the Fourth Proportional to 72,771,387.80, 109,157,081.70 and 66,819,248.60

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Solution

The fourth proportional to 72,771,387.80, 109,157,081.70 and 66,819,248.60 is: 100,228,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,771,387.80 : 109,157,081.70 = 66,819,248.60 : x
  2. Step 2: Convert to fraction form
    72,771,387.80/109,157,081.70 = 66,819,248.60/x
  3. Step 3: Cross multiply
    72,771,387.80x = 109,157,081.70 × 66,819,248.60
  4. Step 4: Simplify right side
    72,771,387.80x = 7,293,794,178,562,811
  5. Step 5: Solve for x
    x = 7,293,794,178,562,811/72,771,387.80
  6. Step 6: Final answer
    x = 100,228,872.90

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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.