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Finding the Fourth Proportional to 66,311.39, 99,468.14 and 36,916.07

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Solution

The fourth proportional to 66,311.39, 99,468.14 and 36,916.07 is: 55,374.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,311.39 : 99,468.14 = 36,916.07 : x
  2. Step 2: Convert to fraction form
    66,311.39/99,468.14 = 36,916.07/x
  3. Step 3: Cross multiply
    66,311.39x = 99,468.14 × 36,916.07
  4. Step 4: Simplify right side
    66,311.39x = 3,671,972,137.09
  5. Step 5: Solve for x
    x = 3,671,972,137.09/66,311.39
  6. Step 6: Final answer
    x = 55,374.69

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1.5x scale

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.