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Finding the Fourth Proportional to 30,363, 45,568.02 and 21,068.28

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Solution

The fourth proportional to 30,363, 45,568.02 and 21,068.28 is: 31,618.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,363 : 45,568.02 = 21,068.28 : x
  2. Step 2: Convert to fraction form
    30,363/45,568.02 = 21,068.28/x
  3. Step 3: Cross multiply
    30,363x = 45,568.02 × 21,068.28
  4. Step 4: Simplify right side
    30,363x = 960,039,804.41
  5. Step 5: Solve for x
    x = 960,039,804.41/30,363
  6. Step 6: Final answer
    x = 31,618.74

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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.