Home / 31,424,960.32-43,386,369.89-21,518,420.97

Finding the Fourth Proportional to 31,424,960.32, 43,386,369.89 and 21,518,420.97

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Solution

The fourth proportional to 31,424,960.32, 43,386,369.89 and 21,518,420.97 is: 29,709,064.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,424,960.32 : 43,386,369.89 = 21,518,420.97 : x
  2. Step 2: Convert to fraction form
    31,424,960.32/43,386,369.89 = 21,518,420.97/x
  3. Step 3: Cross multiply
    31,424,960.32x = 43,386,369.89 × 21,518,420.97
  4. Step 4: Simplify right side
    31,424,960.32x = 933,606,171,544,249.62
  5. Step 5: Solve for x
    x = 933,606,171,544,249.62/31,424,960.32
  6. Step 6: Final answer
    x = 29,709,064.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.