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Finding the Fourth Proportional to 66,560.84, 99,840.80 and 16,640.64

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Solution

The fourth proportional to 66,560.84, 99,840.80 and 16,640.64 is: 24,960.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,560.84 : 99,840.80 = 16,640.64 : x
  2. Step 2: Convert to fraction form
    66,560.84/99,840.80 = 16,640.64/x
  3. Step 3: Cross multiply
    66,560.84x = 99,840.80 × 16,640.64
  4. Step 4: Simplify right side
    66,560.84x = 1,661,414,851.71
  5. Step 5: Solve for x
    x = 1,661,414,851.71/66,560.84
  6. Step 6: Final answer
    x = 24,960.85

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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.