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Finding the Fourth Proportional to 43,812.40, 65,741.55 and 20,127.10

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Solution

The fourth proportional to 43,812.40, 65,741.55 and 20,127.10 is: 30,201.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,812.40 : 65,741.55 = 20,127.10 : x
  2. Step 2: Convert to fraction form
    43,812.40/65,741.55 = 20,127.10/x
  3. Step 3: Cross multiply
    43,812.40x = 65,741.55 × 20,127.10
  4. Step 4: Simplify right side
    43,812.40x = 1,323,186,751.01
  5. Step 5: Solve for x
    x = 1,323,186,751.01/43,812.40
  6. Step 6: Final answer
    x = 30,201.19

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1.5x scale

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.