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Finding the Fourth Proportional to 65,988.81, 91,063.44 and 37,307.99

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Solution

The fourth proportional to 65,988.81, 91,063.44 and 37,307.99 is: 51,484.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,988.81 : 91,063.44 = 37,307.99 : x
  2. Step 2: Convert to fraction form
    65,988.81/91,063.44 = 37,307.99/x
  3. Step 3: Cross multiply
    65,988.81x = 91,063.44 × 37,307.99
  4. Step 4: Simplify right side
    65,988.81x = 3,397,394,136.54
  5. Step 5: Solve for x
    x = 3,397,394,136.54/65,988.81
  6. Step 6: Final answer
    x = 51,484.40

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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.