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Finding the Fourth Proportional to 20,715,264,015.65, 31,072,896,023.48 and 20,715,264,015.65

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Solution

The fourth proportional to 20,715,264,015.65, 31,072,896,023.48 and 20,715,264,015.65 is: 31,072,896,023.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715,264,015.65 : 31,072,896,023.48 = 20,715,264,015.65 : x
  2. Step 2: Convert to fraction form
    20,715,264,015.65/31,072,896,023.48 = 20,715,264,015.65/x
  3. Step 3: Cross multiply
    20,715,264,015.65x = 31,072,896,023.48 × 20,715,264,015.65
  4. Step 4: Simplify right side
    20,715,264,015.65x = 643,683,244,857,125,634,048
  5. Step 5: Solve for x
    x = 643,683,244,857,125,634,048/20,715,264,015.65
  6. Step 6: Final answer
    x = 31,072,896,023.48

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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.