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Finding the Fourth Proportional to 72,750.87, 100,339.31 and 47,265.44

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Solution

The fourth proportional to 72,750.87, 100,339.31 and 47,265.44 is: 65,189.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,750.87 : 100,339.31 = 47,265.44 : x
  2. Step 2: Convert to fraction form
    72,750.87/100,339.31 = 47,265.44/x
  3. Step 3: Cross multiply
    72,750.87x = 100,339.31 × 47,265.44
  4. Step 4: Simplify right side
    72,750.87x = 4,742,581,252.91
  5. Step 5: Solve for x
    x = 4,742,581,252.91/72,750.87
  6. Step 6: Final answer
    x = 65,189.34

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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.