Home / 81,438,177.40-122,157,266.10-49,126,564.60

Finding the Fourth Proportional to 81,438,177.40, 122,157,266.10 and 49,126,564.60

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Solution

The fourth proportional to 81,438,177.40, 122,157,266.10 and 49,126,564.60 is: 73,689,846.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,438,177.40 : 122,157,266.10 = 49,126,564.60 : x
  2. Step 2: Convert to fraction form
    81,438,177.40/122,157,266.10 = 49,126,564.60/x
  3. Step 3: Cross multiply
    81,438,177.40x = 122,157,266.10 × 49,126,564.60
  4. Step 4: Simplify right side
    81,438,177.40x = 6,001,166,824,421,040
  5. Step 5: Solve for x
    x = 6,001,166,824,421,040/81,438,177.40
  6. Step 6: Final answer
    x = 73,689,846.90

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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.