Home / 85,707.45-118,274.99-47,983.05

Finding the Fourth Proportional to 85,707.45, 118,274.99 and 47,983.05

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Solution

The fourth proportional to 85,707.45, 118,274.99 and 47,983.05 is: 66,215.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,707.45 : 118,274.99 = 47,983.05 : x
  2. Step 2: Convert to fraction form
    85,707.45/118,274.99 = 47,983.05/x
  3. Step 3: Cross multiply
    85,707.45x = 118,274.99 × 47,983.05
  4. Step 4: Simplify right side
    85,707.45x = 5,675,194,519.00
  5. Step 5: Solve for x
    x = 5,675,194,519.00/85,707.45
  6. Step 6: Final answer
    x = 66,215.88

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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.