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Finding the Fourth Proportional to 65,972.90, 91,054.80 and 37,678.59

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Solution

The fourth proportional to 65,972.90, 91,054.80 and 37,678.59 is: 52,003.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,972.90 : 91,054.80 = 37,678.59 : x
  2. Step 2: Convert to fraction form
    65,972.90/91,054.80 = 37,678.59/x
  3. Step 3: Cross multiply
    65,972.90x = 91,054.80 × 37,678.59
  4. Step 4: Simplify right side
    65,972.90x = 3,430,816,476.73
  5. Step 5: Solve for x
    x = 3,430,816,476.73/65,972.90
  6. Step 6: Final answer
    x = 52,003.42

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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.