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Finding the Fourth Proportional to 47,630.40, 65,714.40 and 29,716.80

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Solution

The fourth proportional to 47,630.40, 65,714.40 and 29,716.80 is: 40,999.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,630.40 : 65,714.40 = 29,716.80 : x
  2. Step 2: Convert to fraction form
    47,630.40/65,714.40 = 29,716.80/x
  3. Step 3: Cross multiply
    47,630.40x = 65,714.40 × 29,716.80
  4. Step 4: Simplify right side
    47,630.40x = 1,952,821,681.92
  5. Step 5: Solve for x
    x = 1,952,821,681.92/47,630.40
  6. Step 6: Final answer
    x = 40,999.48

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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.