Home / 56,262.80-77,643.24-31,113.20

Finding the Fourth Proportional to 56,262.80, 77,643.24 and 31,113.20

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Solution

The fourth proportional to 56,262.80, 77,643.24 and 31,113.20 is: 42,936.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,262.80 : 77,643.24 = 31,113.20 : x
  2. Step 2: Convert to fraction form
    56,262.80/77,643.24 = 31,113.20/x
  3. Step 3: Cross multiply
    56,262.80x = 77,643.24 × 31,113.20
  4. Step 4: Simplify right side
    56,262.80x = 2,415,729,654.77
  5. Step 5: Solve for x
    x = 2,415,729,654.77/56,262.80
  6. Step 6: Final answer
    x = 42,936.53

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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.