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Finding the Fourth Proportional to 47,243.64, 70,688.02 and 28,921.40

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Solution

The fourth proportional to 47,243.64, 70,688.02 and 28,921.40 is: 43,273.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,243.64 : 70,688.02 = 28,921.40 : x
  2. Step 2: Convert to fraction form
    47,243.64/70,688.02 = 28,921.40/x
  3. Step 3: Cross multiply
    47,243.64x = 70,688.02 × 28,921.40
  4. Step 4: Simplify right side
    47,243.64x = 2,044,396,501.63
  5. Step 5: Solve for x
    x = 2,044,396,501.63/47,243.64
  6. Step 6: Final answer
    x = 43,273.48

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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.