Home / 56,267.40-77,637.78-31,112.04

Finding the Fourth Proportional to 56,267.40, 77,637.78 and 31,112.04

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Solution

The fourth proportional to 56,267.40, 77,637.78 and 31,112.04 is: 42,928.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,267.40 : 77,637.78 = 31,112.04 : x
  2. Step 2: Convert to fraction form
    56,267.40/77,637.78 = 31,112.04/x
  3. Step 3: Cross multiply
    56,267.40x = 77,637.78 × 31,112.04
  4. Step 4: Simplify right side
    56,267.40x = 2,415,469,716.87
  5. Step 5: Solve for x
    x = 2,415,469,716.87/56,267.40
  6. Step 6: Final answer
    x = 42,928.40

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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.