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Finding the Fourth Proportional to 66,240.64, 91,412.10 and 36,432.64

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Solution

The fourth proportional to 66,240.64, 91,412.10 and 36,432.64 is: 50,277.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,240.64 : 91,412.10 = 36,432.64 : x
  2. Step 2: Convert to fraction form
    66,240.64/91,412.10 = 36,432.64/x
  3. Step 3: Cross multiply
    66,240.64x = 91,412.10 × 36,432.64
  4. Step 4: Simplify right side
    66,240.64x = 3,330,384,130.94
  5. Step 5: Solve for x
    x = 3,330,384,130.94/66,240.64
  6. Step 6: Final answer
    x = 50,277.05

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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.