Home / 67,686.06-93,416.34-39,400.86

Finding the Fourth Proportional to 67,686.06, 93,416.34 and 39,400.86

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Solution

The fourth proportional to 67,686.06, 93,416.34 and 39,400.86 is: 54,378.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,686.06 : 93,416.34 = 39,400.86 : x
  2. Step 2: Convert to fraction form
    67,686.06/93,416.34 = 39,400.86/x
  3. Step 3: Cross multiply
    67,686.06x = 93,416.34 × 39,400.86
  4. Step 4: Simplify right side
    67,686.06x = 3,680,684,134.05
  5. Step 5: Solve for x
    x = 3,680,684,134.05/67,686.06
  6. Step 6: Final answer
    x = 54,378.76

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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.