Home / 68,219.80-94,095.18-39,931.12

Finding the Fourth Proportional to 68,219.80, 94,095.18 and 39,931.12

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Solution

The fourth proportional to 68,219.80, 94,095.18 and 39,931.12 is: 55,076.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,219.80 : 94,095.18 = 39,931.12 : x
  2. Step 2: Convert to fraction form
    68,219.80/94,095.18 = 39,931.12/x
  3. Step 3: Cross multiply
    68,219.80x = 94,095.18 × 39,931.12
  4. Step 4: Simplify right side
    68,219.80x = 3,757,325,924.00
  5. Step 5: Solve for x
    x = 3,757,325,924.00/68,219.80
  6. Step 6: Final answer
    x = 55,076.77

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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.