Home / 56,753.26-78,320.04-31,259.72

Finding the Fourth Proportional to 56,753.26, 78,320.04 and 31,259.72

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Solution

The fourth proportional to 56,753.26, 78,320.04 and 31,259.72 is: 43,138.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,753.26 : 78,320.04 = 31,259.72 : x
  2. Step 2: Convert to fraction form
    56,753.26/78,320.04 = 31,259.72/x
  3. Step 3: Cross multiply
    56,753.26x = 78,320.04 × 31,259.72
  4. Step 4: Simplify right side
    56,753.26x = 2,448,262,364.49
  5. Step 5: Solve for x
    x = 2,448,262,364.49/56,753.26
  6. Step 6: Final answer
    x = 43,138.71

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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.