Home / 65,934.12-90,989.28-37,639.20

Finding the Fourth Proportional to 65,934.12, 90,989.28 and 37,639.20

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Solution

The fourth proportional to 65,934.12, 90,989.28 and 37,639.20 is: 51,942.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,934.12 : 90,989.28 = 37,639.20 : x
  2. Step 2: Convert to fraction form
    65,934.12/90,989.28 = 37,639.20/x
  3. Step 3: Cross multiply
    65,934.12x = 90,989.28 × 37,639.20
  4. Step 4: Simplify right side
    65,934.12x = 3,424,763,707.78
  5. Step 5: Solve for x
    x = 3,424,763,707.78/65,934.12
  6. Step 6: Final answer
    x = 51,942.21

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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.