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Finding the Fourth Proportional to 66,259.76, 91,438.44 and 37,981.84

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Solution

The fourth proportional to 66,259.76, 91,438.44 and 37,981.84 is: 52,414.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,259.76 : 91,438.44 = 37,981.84 : x
  2. Step 2: Convert to fraction form
    66,259.76/91,438.44 = 37,981.84/x
  3. Step 3: Cross multiply
    66,259.76x = 91,438.44 × 37,981.84
  4. Step 4: Simplify right side
    66,259.76x = 3,473,000,197.93
  5. Step 5: Solve for x
    x = 3,473,000,197.93/66,259.76
  6. Step 6: Final answer
    x = 52,414.92

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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.