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Finding the Fourth Proportional to 100,682.80, 151,045.80 and 30,569.20

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Solution

The fourth proportional to 100,682.80, 151,045.80 and 30,569.20 is: 45,860.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,682.80 : 151,045.80 = 30,569.20 : x
  2. Step 2: Convert to fraction form
    100,682.80/151,045.80 = 30,569.20/x
  3. Step 3: Cross multiply
    100,682.80x = 151,045.80 × 30,569.20
  4. Step 4: Simplify right side
    100,682.80x = 4,617,349,269.36
  5. Step 5: Solve for x
    x = 4,617,349,269.36/100,682.80
  6. Step 6: Final answer
    x = 45,860.36

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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.