Home / 40,685.76-61,047-25,890.84

Finding the Fourth Proportional to 40,685.76, 61,047 and 25,890.84

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Solution

The fourth proportional to 40,685.76, 61,047 and 25,890.84 is: 38,847.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,685.76 : 61,047 = 25,890.84 : x
  2. Step 2: Convert to fraction form
    40,685.76/61,047 = 25,890.84/x
  3. Step 3: Cross multiply
    40,685.76x = 61,047 × 25,890.84
  4. Step 4: Simplify right side
    40,685.76x = 1,580,558,109.48
  5. Step 5: Solve for x
    x = 1,580,558,109.48/40,685.76
  6. Step 6: Final answer
    x = 38,847.94

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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.