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Finding the Fourth Proportional to 47,001.80, 70,502.70 and 43,721.30

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Solution

The fourth proportional to 47,001.80, 70,502.70 and 43,721.30 is: 65,581.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,001.80 : 70,502.70 = 43,721.30 : x
  2. Step 2: Convert to fraction form
    47,001.80/70,502.70 = 43,721.30/x
  3. Step 3: Cross multiply
    47,001.80x = 70,502.70 × 43,721.30
  4. Step 4: Simplify right side
    47,001.80x = 3,082,469,697.51
  5. Step 5: Solve for x
    x = 3,082,469,697.51/47,001.80
  6. Step 6: Final answer
    x = 65,581.95

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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.