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Finding the Fourth Proportional to 66,013.92, 91,106.64 and 45,865.44

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Solution

The fourth proportional to 66,013.92, 91,106.64 and 45,865.44 is: 63,299.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,013.92 : 91,106.64 = 45,865.44 : x
  2. Step 2: Convert to fraction form
    66,013.92/91,106.64 = 45,865.44/x
  3. Step 3: Cross multiply
    66,013.92x = 91,106.64 × 45,865.44
  4. Step 4: Simplify right side
    66,013.92x = 4,178,646,130.52
  5. Step 5: Solve for x
    x = 4,178,646,130.52/66,013.92
  6. Step 6: Final answer
    x = 63,299.47

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1.5x scale

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.