Home / 71,784.16-107,150.66-66,580.18

Finding the Fourth Proportional to 71,784.16, 107,150.66 and 66,580.18

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Solution

The fourth proportional to 71,784.16, 107,150.66 and 66,580.18 is: 99,382.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,784.16 : 107,150.66 = 66,580.18 : x
  2. Step 2: Convert to fraction form
    71,784.16/107,150.66 = 66,580.18/x
  3. Step 3: Cross multiply
    71,784.16x = 107,150.66 × 66,580.18
  4. Step 4: Simplify right side
    71,784.16x = 7,134,110,229.92
  5. Step 5: Solve for x
    x = 7,134,110,229.92/71,784.16
  6. Step 6: Final answer
    x = 99,382.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.