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Finding the Fourth Proportional to 66,417.92, 91,656.72 and 36,609.92

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Solution

The fourth proportional to 66,417.92, 91,656.72 and 36,609.92 is: 50,521.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,417.92 : 91,656.72 = 36,609.92 : x
  2. Step 2: Convert to fraction form
    66,417.92/91,656.72 = 36,609.92/x
  3. Step 3: Cross multiply
    66,417.92x = 91,656.72 × 36,609.92
  4. Step 4: Simplify right side
    66,417.92x = 3,355,545,186.66
  5. Step 5: Solve for x
    x = 3,355,545,186.66/66,417.92
  6. Step 6: Final answer
    x = 50,521.68

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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.