Home / 56,800.45-78,389.13-31,311.35

Finding the Fourth Proportional to 56,800.45, 78,389.13 and 31,311.35

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Solution

The fourth proportional to 56,800.45, 78,389.13 and 31,311.35 is: 43,212.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,800.45 : 78,389.13 = 31,311.35 : x
  2. Step 2: Convert to fraction form
    56,800.45/78,389.13 = 31,311.35/x
  3. Step 3: Cross multiply
    56,800.45x = 78,389.13 × 31,311.35
  4. Step 4: Simplify right side
    56,800.45x = 2,454,469,485.63
  5. Step 5: Solve for x
    x = 2,454,469,485.63/56,800.45
  6. Step 6: Final answer
    x = 43,212.15

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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.