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Finding the Fourth Proportional to 64,315.80, 96,506.63 and 30,619.94

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Solution

The fourth proportional to 64,315.80, 96,506.63 and 30,619.94 is: 45,945.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,315.80 : 96,506.63 = 30,619.94 : x
  2. Step 2: Convert to fraction form
    64,315.80/96,506.63 = 30,619.94/x
  3. Step 3: Cross multiply
    64,315.80x = 96,506.63 × 30,619.94
  4. Step 4: Simplify right side
    64,315.80x = 2,955,027,220.20
  5. Step 5: Solve for x
    x = 2,955,027,220.20/64,315.80
  6. Step 6: Final answer
    x = 45,945.59

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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.