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Finding the Fourth Proportional to 43,720, 65,580.24 and 10,888

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Solution

The fourth proportional to 43,720, 65,580.24 and 10,888 is: 16,332.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,720 : 65,580.24 = 10,888 : x
  2. Step 2: Convert to fraction form
    43,720/65,580.24 = 10,888/x
  3. Step 3: Cross multiply
    43,720x = 65,580.24 × 10,888
  4. Step 4: Simplify right side
    43,720x = 714,037,653.12
  5. Step 5: Solve for x
    x = 714,037,653.12/43,720
  6. Step 6: Final answer
    x = 16,332.06

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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.