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Finding the Fourth Proportional to 40,528, 60,765 and 16,829.38

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Solution

The fourth proportional to 40,528, 60,765 and 16,829.38 is: 25,232.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,528 : 60,765 = 16,829.38 : x
  2. Step 2: Convert to fraction form
    40,528/60,765 = 16,829.38/x
  3. Step 3: Cross multiply
    40,528x = 60,765 × 16,829.38
  4. Step 4: Simplify right side
    40,528x = 1,022,637,275.70
  5. Step 5: Solve for x
    x = 1,022,637,275.70/40,528
  6. Step 6: Final answer
    x = 25,232.86

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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.