Home / 79,438,898.52-119,158,172.46-21,146,589.72

Finding the Fourth Proportional to 79,438,898.52, 119,158,172.46 and 21,146,589.72

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Solution

The fourth proportional to 79,438,898.52, 119,158,172.46 and 21,146,589.72 is: 31,719,837.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,438,898.52 : 119,158,172.46 = 21,146,589.72 : x
  2. Step 2: Convert to fraction form
    79,438,898.52/119,158,172.46 = 21,146,589.72/x
  3. Step 3: Cross multiply
    79,438,898.52x = 119,158,172.46 × 21,146,589.72
  4. Step 4: Simplify right side
    79,438,898.52x = 2,519,788,984,796,623
  5. Step 5: Solve for x
    x = 2,519,788,984,796,623/79,438,898.52
  6. Step 6: Final answer
    x = 31,719,837.91

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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.