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Finding the Fourth Proportional to 43,452.68, 65,210.10 and 18,510.20

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Solution

The fourth proportional to 43,452.68, 65,210.10 and 18,510.20 is: 27,778.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,452.68 : 65,210.10 = 18,510.20 : x
  2. Step 2: Convert to fraction form
    43,452.68/65,210.10 = 18,510.20/x
  3. Step 3: Cross multiply
    43,452.68x = 65,210.10 × 18,510.20
  4. Step 4: Simplify right side
    43,452.68x = 1,207,051,993.02
  5. Step 5: Solve for x
    x = 1,207,051,993.02/43,452.68
  6. Step 6: Final answer
    x = 27,778.54

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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.