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Finding the Fourth Proportional to 58,188.80, 87,296.90 and 18,744.50

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Solution

The fourth proportional to 58,188.80, 87,296.90 and 18,744.50 is: 28,121.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,188.80 : 87,296.90 = 18,744.50 : x
  2. Step 2: Convert to fraction form
    58,188.80/87,296.90 = 18,744.50/x
  3. Step 3: Cross multiply
    58,188.80x = 87,296.90 × 18,744.50
  4. Step 4: Simplify right side
    58,188.80x = 1,636,336,211.84
  5. Step 5: Solve for x
    x = 1,636,336,211.84/58,188.80
  6. Step 6: Final answer
    x = 28,121.16

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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.