Home / 43,720.16-65,580.28-18,744.08

Finding the Fourth Proportional to 43,720.16, 65,580.28 and 18,744.08

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Solution

The fourth proportional to 43,720.16, 65,580.28 and 18,744.08 is: 28,116.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,720.16 : 65,580.28 = 18,744.08 : x
  2. Step 2: Convert to fraction form
    43,720.16/65,580.28 = 18,744.08/x
  3. Step 3: Cross multiply
    43,720.16x = 65,580.28 × 18,744.08
  4. Step 4: Simplify right side
    43,720.16x = 1,229,241,639.98
  5. Step 5: Solve for x
    x = 1,229,241,639.98/43,720.16
  6. Step 6: Final answer
    x = 28,116.13

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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.