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Finding the Fourth Proportional to 47,630.16, 65,720.16 and 28,768.32

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Solution

The fourth proportional to 47,630.16, 65,720.16 and 28,768.32 is: 39,694.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,630.16 : 65,720.16 = 28,768.32 : x
  2. Step 2: Convert to fraction form
    47,630.16/65,720.16 = 28,768.32/x
  3. Step 3: Cross multiply
    47,630.16x = 65,720.16 × 28,768.32
  4. Step 4: Simplify right side
    47,630.16x = 1,890,658,593.33
  5. Step 5: Solve for x
    x = 1,890,658,593.33/47,630.16
  6. Step 6: Final answer
    x = 39,694.57

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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.