Home / 66,066.84-91,166.20-39,204.72

Finding the Fourth Proportional to 66,066.84, 91,166.20 and 39,204.72

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Solution

The fourth proportional to 66,066.84, 91,166.20 and 39,204.72 is: 54,098.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,066.84 : 91,166.20 = 39,204.72 : x
  2. Step 2: Convert to fraction form
    66,066.84/91,166.20 = 39,204.72/x
  3. Step 3: Cross multiply
    66,066.84x = 91,166.20 × 39,204.72
  4. Step 4: Simplify right side
    66,066.84x = 3,574,145,344.46
  5. Step 5: Solve for x
    x = 3,574,145,344.46/66,066.84
  6. Step 6: Final answer
    x = 54,098.93

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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.