Home / 56,735.76-78,319.56-40,393.50

Finding the Fourth Proportional to 56,735.76, 78,319.56 and 40,393.50

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Solution

The fourth proportional to 56,735.76, 78,319.56 and 40,393.50 is: 55,760.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,735.76 : 78,319.56 = 40,393.50 : x
  2. Step 2: Convert to fraction form
    56,735.76/78,319.56 = 40,393.50/x
  3. Step 3: Cross multiply
    56,735.76x = 78,319.56 × 40,393.50
  4. Step 4: Simplify right side
    56,735.76x = 3,163,601,146.86
  5. Step 5: Solve for x
    x = 3,163,601,146.86/56,735.76
  6. Step 6: Final answer
    x = 55,760.27

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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.