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Finding the Fourth Proportional to 66,300.68, 91,497.92 and 40,808.22

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Solution

The fourth proportional to 66,300.68, 91,497.92 and 40,808.22 is: 56,317.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,300.68 : 91,497.92 = 40,808.22 : x
  2. Step 2: Convert to fraction form
    66,300.68/91,497.92 = 40,808.22/x
  3. Step 3: Cross multiply
    66,300.68x = 91,497.92 × 40,808.22
  4. Step 4: Simplify right side
    66,300.68x = 3,733,867,044.86
  5. Step 5: Solve for x
    x = 3,733,867,044.86/66,300.68
  6. Step 6: Final answer
    x = 56,317.18

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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.