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Finding the Fourth Proportional to 63,291.90, 87,345.09 and 37,809.30

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Solution

The fourth proportional to 63,291.90, 87,345.09 and 37,809.30 is: 52,178.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,291.90 : 87,345.09 = 37,809.30 : x
  2. Step 2: Convert to fraction form
    63,291.90/87,345.09 = 37,809.30/x
  3. Step 3: Cross multiply
    63,291.90x = 87,345.09 × 37,809.30
  4. Step 4: Simplify right side
    63,291.90x = 3,302,456,711.34
  5. Step 5: Solve for x
    x = 3,302,456,711.34/63,291.90
  6. Step 6: Final answer
    x = 52,178.19

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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.