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Finding the Fourth Proportional to 66,424.80, 91,656.72 and 41,265.12

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Solution

The fourth proportional to 66,424.80, 91,656.72 and 41,265.12 is: 56,939.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,424.80 : 91,656.72 = 41,265.12 : x
  2. Step 2: Convert to fraction form
    66,424.80/91,656.72 = 41,265.12/x
  3. Step 3: Cross multiply
    66,424.80x = 91,656.72 × 41,265.12
  4. Step 4: Simplify right side
    66,424.80x = 3,782,225,549.61
  5. Step 5: Solve for x
    x = 3,782,225,549.61/66,424.80
  6. Step 6: Final answer
    x = 56,939.96

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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.