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Finding the Fourth Proportional to 75,665.72, 104,326.17 and 47,322.20

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Solution

The fourth proportional to 75,665.72, 104,326.17 and 47,322.20 is: 65,246.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,665.72 : 104,326.17 = 47,322.20 : x
  2. Step 2: Convert to fraction form
    75,665.72/104,326.17 = 47,322.20/x
  3. Step 3: Cross multiply
    75,665.72x = 104,326.17 × 47,322.20
  4. Step 4: Simplify right side
    75,665.72x = 4,936,943,360.34
  5. Step 5: Solve for x
    x = 4,936,943,360.34/75,665.72
  6. Step 6: Final answer
    x = 65,246.77

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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.