Home / 31,161,670.44-42,980,802.78-21,871,313.56

Finding the Fourth Proportional to 31,161,670.44, 42,980,802.78 and 21,871,313.56

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Solution

The fourth proportional to 31,161,670.44, 42,980,802.78 and 21,871,313.56 is: 30,166,759.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,161,670.44 : 42,980,802.78 = 21,871,313.56 : x
  2. Step 2: Convert to fraction form
    31,161,670.44/42,980,802.78 = 21,871,313.56/x
  3. Step 3: Cross multiply
    31,161,670.44x = 42,980,802.78 × 21,871,313.56
  4. Step 4: Simplify right side
    31,161,670.44x = 940,046,614,661,899.62
  5. Step 5: Solve for x
    x = 940,046,614,661,899.62/31,161,670.44
  6. Step 6: Final answer
    x = 30,166,759.40

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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.