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Finding the Fourth Proportional to 58,777.31, 81,112.99 and 31,920.04

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Solution

The fourth proportional to 58,777.31, 81,112.99 and 31,920.04 is: 44,049.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,777.31 : 81,112.99 = 31,920.04 : x
  2. Step 2: Convert to fraction form
    58,777.31/81,112.99 = 31,920.04/x
  3. Step 3: Cross multiply
    58,777.31x = 81,112.99 × 31,920.04
  4. Step 4: Simplify right side
    58,777.31x = 2,589,129,885.32
  5. Step 5: Solve for x
    x = 2,589,129,885.32/58,777.31
  6. Step 6: Final answer
    x = 44,049.82

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1.5x scale

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.