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Finding the Fourth Proportional to 47,352.80, 71,029.20 and 45,165.80

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Solution

The fourth proportional to 47,352.80, 71,029.20 and 45,165.80 is: 67,748.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,352.80 : 71,029.20 = 45,165.80 : x
  2. Step 2: Convert to fraction form
    47,352.80/71,029.20 = 45,165.80/x
  3. Step 3: Cross multiply
    47,352.80x = 71,029.20 × 45,165.80
  4. Step 4: Simplify right side
    47,352.80x = 3,208,090,641.36
  5. Step 5: Solve for x
    x = 3,208,090,641.36/47,352.80
  6. Step 6: Final answer
    x = 67,748.70

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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.