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Finding the Fourth Proportional to 66,776.50, 92,154.61 and 36,968.50

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Solution

The fourth proportional to 66,776.50, 92,154.61 and 36,968.50 is: 51,018.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,776.50 : 92,154.61 = 36,968.50 : x
  2. Step 2: Convert to fraction form
    66,776.50/92,154.61 = 36,968.50/x
  3. Step 3: Cross multiply
    66,776.50x = 92,154.61 × 36,968.50
  4. Step 4: Simplify right side
    66,776.50x = 3,406,817,699.79
  5. Step 5: Solve for x
    x = 3,406,817,699.79/66,776.50
  6. Step 6: Final answer
    x = 51,018.21

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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.