Home / 81,438,112.65-122,157,168.98-49,126,499.85

Finding the Fourth Proportional to 81,438,112.65, 122,157,168.98 and 49,126,499.85

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Solution

The fourth proportional to 81,438,112.65, 122,157,168.98 and 49,126,499.85 is: 73,689,749.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,438,112.65 : 122,157,168.98 = 49,126,499.85 : x
  2. Step 2: Convert to fraction form
    81,438,112.65/122,157,168.98 = 49,126,499.85/x
  3. Step 3: Cross multiply
    81,438,112.65x = 122,157,168.98 × 49,126,499.85
  4. Step 4: Simplify right side
    81,438,112.65x = 6,001,154,143,326,762
  5. Step 5: Solve for x
    x = 6,001,154,143,326,762/81,438,112.65
  6. Step 6: Final answer
    x = 73,689,749.78

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Double scale
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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.