Home / 51,011,663.20-76,538,000.40-20,721,896.80

Finding the Fourth Proportional to 51,011,663.20, 76,538,000.40 and 20,721,896.80

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Solution

The fourth proportional to 51,011,663.20, 76,538,000.40 and 20,721,896.80 is: 31,091,174.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,011,663.20 : 76,538,000.40 = 20,721,896.80 : x
  2. Step 2: Convert to fraction form
    51,011,663.20/76,538,000.40 = 20,721,896.80/x
  3. Step 3: Cross multiply
    51,011,663.20x = 76,538,000.40 × 20,721,896.80
  4. Step 4: Simplify right side
    51,011,663.20x = 1,586,012,545,567,159
  5. Step 5: Solve for x
    x = 1,586,012,545,567,159/51,011,663.20
  6. Step 6: Final answer
    x = 31,091,174.96

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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.