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Finding the Fourth Proportional to 47,020.80, 70,531.20 and 43,910.40

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Solution

The fourth proportional to 47,020.80, 70,531.20 and 43,910.40 is: 65,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,020.80 : 70,531.20 = 43,910.40 : x
  2. Step 2: Convert to fraction form
    47,020.80/70,531.20 = 43,910.40/x
  3. Step 3: Cross multiply
    47,020.80x = 70,531.20 × 43,910.40
  4. Step 4: Simplify right side
    47,020.80x = 3,097,053,204.48
  5. Step 5: Solve for x
    x = 3,097,053,204.48/47,020.80
  6. Step 6: Final answer
    x = 65,865.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.