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Finding the Fourth Proportional to 66,424.96, 91,663.76 and 36,209.64

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Solution

The fourth proportional to 66,424.96, 91,663.76 and 36,209.64 is: 49,967.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,424.96 : 91,663.76 = 36,209.64 : x
  2. Step 2: Convert to fraction form
    66,424.96/91,663.76 = 36,209.64/x
  3. Step 3: Cross multiply
    66,424.96x = 91,663.76 × 36,209.64
  4. Step 4: Simplify right side
    66,424.96x = 3,319,111,750.65
  5. Step 5: Solve for x
    x = 3,319,111,750.65/66,424.96
  6. Step 6: Final answer
    x = 49,967.84

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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.