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Finding the Fourth Proportional to 66,578.16, 91,875.78 and 36,363

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Solution

The fourth proportional to 66,578.16, 91,875.78 and 36,363 is: 50,179.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,578.16 : 91,875.78 = 36,363 : x
  2. Step 2: Convert to fraction form
    66,578.16/91,875.78 = 36,363/x
  3. Step 3: Cross multiply
    66,578.16x = 91,875.78 × 36,363
  4. Step 4: Simplify right side
    66,578.16x = 3,340,878,988.14
  5. Step 5: Solve for x
    x = 3,340,878,988.14/66,578.16
  6. Step 6: Final answer
    x = 50,179.80

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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.