Home / 51,201,260.72-76,801,965-20,909,123.72

Finding the Fourth Proportional to 51,201,260.72, 76,801,965 and 20,909,123.72

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Solution

The fourth proportional to 51,201,260.72, 76,801,965 and 20,909,123.72 is: 31,363,715.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,201,260.72 : 76,801,965 = 20,909,123.72 : x
  2. Step 2: Convert to fraction form
    51,201,260.72/76,801,965 = 20,909,123.72/x
  3. Step 3: Cross multiply
    51,201,260.72x = 76,801,965 × 20,909,123.72
  4. Step 4: Simplify right side
    51,201,260.72x = 1,605,861,788,124,109.75
  5. Step 5: Solve for x
    x = 1,605,861,788,124,109.75/51,201,260.72
  6. Step 6: Final answer
    x = 31,363,715.77

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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.