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Finding the Fourth Proportional to 66,435.42, 99,700.50 and 36,876.90

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Solution

The fourth proportional to 66,435.42, 99,700.50 and 36,876.90 is: 55,341.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,435.42 : 99,700.50 = 36,876.90 : x
  2. Step 2: Convert to fraction form
    66,435.42/99,700.50 = 36,876.90/x
  3. Step 3: Cross multiply
    66,435.42x = 99,700.50 × 36,876.90
  4. Step 4: Simplify right side
    66,435.42x = 3,676,645,368.45
  5. Step 5: Solve for x
    x = 3,676,645,368.45/66,435.42
  6. Step 6: Final answer
    x = 55,341.64

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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.