Home / 56,972.09-78,621.21-31,478.45

Finding the Fourth Proportional to 56,972.09, 78,621.21 and 31,478.45

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Solution

The fourth proportional to 56,972.09, 78,621.21 and 31,478.45 is: 43,440.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,972.09 : 78,621.21 = 31,478.45 : x
  2. Step 2: Convert to fraction form
    56,972.09/78,621.21 = 31,478.45/x
  3. Step 3: Cross multiply
    56,972.09x = 78,621.21 × 31,478.45
  4. Step 4: Simplify right side
    56,972.09x = 2,474,873,434.82
  5. Step 5: Solve for x
    x = 2,474,873,434.82/56,972.09
  6. Step 6: Final answer
    x = 43,440.11

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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.