Home / 66,517.90-99,776.85-40,209.10

Finding the Fourth Proportional to 66,517.90, 99,776.85 and 40,209.10

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Solution

The fourth proportional to 66,517.90, 99,776.85 and 40,209.10 is: 60,313.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,517.90 : 99,776.85 = 40,209.10 : x
  2. Step 2: Convert to fraction form
    66,517.90/99,776.85 = 40,209.10/x
  3. Step 3: Cross multiply
    66,517.90x = 99,776.85 × 40,209.10
  4. Step 4: Simplify right side
    66,517.90x = 4,011,937,339.34
  5. Step 5: Solve for x
    x = 4,011,937,339.34/66,517.90
  6. Step 6: Final answer
    x = 60,313.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.