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Finding the Fourth Proportional to 65,933.36, 90,987.56 and 37,638.98

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Solution

The fourth proportional to 65,933.36, 90,987.56 and 37,638.98 is: 51,941.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,933.36 : 90,987.56 = 37,638.98 : x
  2. Step 2: Convert to fraction form
    65,933.36/90,987.56 = 37,638.98/x
  3. Step 3: Cross multiply
    65,933.36x = 90,987.56 × 37,638.98
  4. Step 4: Simplify right side
    65,933.36x = 3,424,678,951.09
  5. Step 5: Solve for x
    x = 3,424,678,951.09/65,933.36
  6. Step 6: Final answer
    x = 51,941.52

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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.