Home / 40,347.76-60,577.80-20,639.92

Finding the Fourth Proportional to 40,347.76, 60,577.80 and 20,639.92

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Solution

The fourth proportional to 40,347.76, 60,577.80 and 20,639.92 is: 30,988.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,347.76 : 60,577.80 = 20,639.92 : x
  2. Step 2: Convert to fraction form
    40,347.76/60,577.80 = 20,639.92/x
  3. Step 3: Cross multiply
    40,347.76x = 60,577.80 × 20,639.92
  4. Step 4: Simplify right side
    40,347.76x = 1,250,320,945.78
  5. Step 5: Solve for x
    x = 1,250,320,945.78/40,347.76
  6. Step 6: Final answer
    x = 30,988.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.