Home / 66,531.86-91,815.96-36,319.16

Finding the Fourth Proportional to 66,531.86, 91,815.96 and 36,319.16

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Solution

The fourth proportional to 66,531.86, 91,815.96 and 36,319.16 is: 50,121.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,531.86 : 91,815.96 = 36,319.16 : x
  2. Step 2: Convert to fraction form
    66,531.86/91,815.96 = 36,319.16/x
  3. Step 3: Cross multiply
    66,531.86x = 91,815.96 × 36,319.16
  4. Step 4: Simplify right side
    66,531.86x = 3,334,678,541.79
  5. Step 5: Solve for x
    x = 3,334,678,541.79/66,531.86
  6. Step 6: Final answer
    x = 50,121.53

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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.