Home / 71,213,190.30-106,819,785.45-66,430,221.30

Finding the Fourth Proportional to 71,213,190.30, 106,819,785.45 and 66,430,221.30

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Solution

The fourth proportional to 71,213,190.30, 106,819,785.45 and 66,430,221.30 is: 99,645,331.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,213,190.30 : 106,819,785.45 = 66,430,221.30 : x
  2. Step 2: Convert to fraction form
    71,213,190.30/106,819,785.45 = 66,430,221.30/x
  3. Step 3: Cross multiply
    71,213,190.30x = 106,819,785.45 × 66,430,221.30
  4. Step 4: Simplify right side
    71,213,190.30x = 7,096,061,986,662,020
  5. Step 5: Solve for x
    x = 7,096,061,986,662,020/71,213,190.30
  6. Step 6: Final answer
    x = 99,645,331.95

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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.