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Finding the Fourth Proportional to 58,416, 87,605.44 and 18,964

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Solution

The fourth proportional to 58,416, 87,605.44 and 18,964 is: 28,439.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,416 : 87,605.44 = 18,964 : x
  2. Step 2: Convert to fraction form
    58,416/87,605.44 = 18,964/x
  3. Step 3: Cross multiply
    58,416x = 87,605.44 × 18,964
  4. Step 4: Simplify right side
    58,416x = 1,661,349,564.16
  5. Step 5: Solve for x
    x = 1,661,349,564.16/58,416
  6. Step 6: Final answer
    x = 28,439.97

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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.