Home / 66,989.66-92,455.16-38,315.35

Finding the Fourth Proportional to 66,989.66, 92,455.16 and 38,315.35

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Solution

The fourth proportional to 66,989.66, 92,455.16 and 38,315.35 is: 52,880.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,989.66 : 92,455.16 = 38,315.35 : x
  2. Step 2: Convert to fraction form
    66,989.66/92,455.16 = 38,315.35/x
  3. Step 3: Cross multiply
    66,989.66x = 92,455.16 × 38,315.35
  4. Step 4: Simplify right side
    66,989.66x = 3,542,451,738.70
  5. Step 5: Solve for x
    x = 3,542,451,738.70/66,989.66
  6. Step 6: Final answer
    x = 52,880.58

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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.