Home / 56,753.48-78,319.17-31,259.36

Finding the Fourth Proportional to 56,753.48, 78,319.17 and 31,259.36

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Solution

The fourth proportional to 56,753.48, 78,319.17 and 31,259.36 is: 43,137.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,753.48 : 78,319.17 = 31,259.36 : x
  2. Step 2: Convert to fraction form
    56,753.48/78,319.17 = 31,259.36/x
  3. Step 3: Cross multiply
    56,753.48x = 78,319.17 × 31,259.36
  4. Step 4: Simplify right side
    56,753.48x = 2,448,207,129.93
  5. Step 5: Solve for x
    x = 2,448,207,129.93/56,753.48
  6. Step 6: Final answer
    x = 43,137.57

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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.