Home / 84,587,445.20-126,739,450.20-72,399,731.60

Finding the Fourth Proportional to 84,587,445.20, 126,739,450.20 and 72,399,731.60

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Solution

The fourth proportional to 84,587,445.20, 126,739,450.20 and 72,399,731.60 is: 108,478,299.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,587,445.20 : 126,739,450.20 = 72,399,731.60 : x
  2. Step 2: Convert to fraction form
    84,587,445.20/126,739,450.20 = 72,399,731.60/x
  3. Step 3: Cross multiply
    84,587,445.20x = 126,739,450.20 × 72,399,731.60
  4. Step 4: Simplify right side
    84,587,445.20x = 9,175,902,177,611,566
  5. Step 5: Solve for x
    x = 9,175,902,177,611,566/84,587,445.20
  6. Step 6: Final answer
    x = 108,478,299.07

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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.