Home / 56,287.84-77,670.24-31,137.28

Finding the Fourth Proportional to 56,287.84, 77,670.24 and 31,137.28

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Solution

The fourth proportional to 56,287.84, 77,670.24 and 31,137.28 is: 42,965.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,287.84 : 77,670.24 = 31,137.28 : x
  2. Step 2: Convert to fraction form
    56,287.84/77,670.24 = 31,137.28/x
  3. Step 3: Cross multiply
    56,287.84x = 77,670.24 × 31,137.28
  4. Step 4: Simplify right side
    56,287.84x = 2,418,440,010.55
  5. Step 5: Solve for x
    x = 2,418,440,010.55/56,287.84
  6. Step 6: Final answer
    x = 42,965.59

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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.