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Finding the Fourth Proportional to 43,313.66, 64,959 and 17,018.64

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Solution

The fourth proportional to 43,313.66, 64,959 and 17,018.64 is: 25,523.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,313.66 : 64,959 = 17,018.64 : x
  2. Step 2: Convert to fraction form
    43,313.66/64,959 = 17,018.64/x
  3. Step 3: Cross multiply
    43,313.66x = 64,959 × 17,018.64
  4. Step 4: Simplify right side
    43,313.66x = 1,105,513,835.76
  5. Step 5: Solve for x
    x = 1,105,513,835.76/43,313.66
  6. Step 6: Final answer
    x = 25,523.45

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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.