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Finding the Fourth Proportional to 37,590, 51,861.30 and 21,445.70

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Solution

The fourth proportional to 37,590, 51,861.30 and 21,445.70 is: 29,587.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,590 : 51,861.30 = 21,445.70 : x
  2. Step 2: Convert to fraction form
    37,590/51,861.30 = 21,445.70/x
  3. Step 3: Cross multiply
    37,590x = 51,861.30 × 21,445.70
  4. Step 4: Simplify right side
    37,590x = 1,112,201,881.41
  5. Step 5: Solve for x
    x = 1,112,201,881.41/37,590
  6. Step 6: Final answer
    x = 29,587.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.