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Finding the Fourth Proportional to 58,417, 87,606.94 and 18,965

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Solution

The fourth proportional to 58,417, 87,606.94 and 18,965 is: 28,441.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,417 : 87,606.94 = 18,965 : x
  2. Step 2: Convert to fraction form
    58,417/87,606.94 = 18,965/x
  3. Step 3: Cross multiply
    58,417x = 87,606.94 × 18,965
  4. Step 4: Simplify right side
    58,417x = 1,661,465,617.10
  5. Step 5: Solve for x
    x = 1,661,465,617.10/58,417
  6. Step 6: Final answer
    x = 28,441.47

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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.