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Finding the Fourth Proportional to 69,637.29, 104,415.88 and 37,139.40

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Solution

The fourth proportional to 69,637.29, 104,415.88 and 37,139.40 is: 55,687.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,637.29 : 104,415.88 = 37,139.40 : x
  2. Step 2: Convert to fraction form
    69,637.29/104,415.88 = 37,139.40/x
  3. Step 3: Cross multiply
    69,637.29x = 104,415.88 × 37,139.40
  4. Step 4: Simplify right side
    69,637.29x = 3,877,943,299.67
  5. Step 5: Solve for x
    x = 3,877,943,299.67/69,637.29
  6. Step 6: Final answer
    x = 55,687.74

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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.