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Finding the Fourth Proportional to 85,700.70, 118,265.67 and 47,976.30

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Solution

The fourth proportional to 85,700.70, 118,265.67 and 47,976.30 is: 66,206.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,700.70 : 118,265.67 = 47,976.30 : x
  2. Step 2: Convert to fraction form
    85,700.70/118,265.67 = 47,976.30/x
  3. Step 3: Cross multiply
    85,700.70x = 118,265.67 × 47,976.30
  4. Step 4: Simplify right side
    85,700.70x = 5,673,949,263.62
  5. Step 5: Solve for x
    x = 5,673,949,263.62/85,700.70
  6. Step 6: Final answer
    x = 66,206.57

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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.