Home / 40,389.50-55,742.72-23,168.57

Finding the Fourth Proportional to 40,389.50, 55,742.72 and 23,168.57

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Solution

The fourth proportional to 40,389.50, 55,742.72 and 23,168.57 is: 31,975.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,389.50 : 55,742.72 = 23,168.57 : x
  2. Step 2: Convert to fraction form
    40,389.50/55,742.72 = 23,168.57/x
  3. Step 3: Cross multiply
    40,389.50x = 55,742.72 × 23,168.57
  4. Step 4: Simplify right side
    40,389.50x = 1,291,478,715.75
  5. Step 5: Solve for x
    x = 1,291,478,715.75/40,389.50
  6. Step 6: Final answer
    x = 31,975.60

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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.