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Finding the Fourth Proportional to 65,679.25, 90,637.47 and 37,384.94

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Solution

The fourth proportional to 65,679.25, 90,637.47 and 37,384.94 is: 51,591.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,679.25 : 90,637.47 = 37,384.94 : x
  2. Step 2: Convert to fraction form
    65,679.25/90,637.47 = 37,384.94/x
  3. Step 3: Cross multiply
    65,679.25x = 90,637.47 × 37,384.94
  4. Step 4: Simplify right side
    65,679.25x = 3,388,476,377.70
  5. Step 5: Solve for x
    x = 3,388,476,377.70/65,679.25
  6. Step 6: Final answer
    x = 51,591.28

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1.5x scale

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.