Home / 56,753.43-78,320.26-31,259.88

Finding the Fourth Proportional to 56,753.43, 78,320.26 and 31,259.88

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Solution

The fourth proportional to 56,753.43, 78,320.26 and 31,259.88 is: 43,138.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,753.43 : 78,320.26 = 31,259.88 : x
  2. Step 2: Convert to fraction form
    56,753.43/78,320.26 = 31,259.88/x
  3. Step 3: Cross multiply
    56,753.43x = 78,320.26 × 31,259.88
  4. Step 4: Simplify right side
    56,753.43x = 2,448,282,144.72
  5. Step 5: Solve for x
    x = 2,448,282,144.72/56,753.43
  6. Step 6: Final answer
    x = 43,138.93

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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.