Home / 72,839.16-100,546.26-56,928.74

Finding the Fourth Proportional to 72,839.16, 100,546.26 and 56,928.74

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Solution

The fourth proportional to 72,839.16, 100,546.26 and 56,928.74 is: 78,583.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,839.16 : 100,546.26 = 56,928.74 : x
  2. Step 2: Convert to fraction form
    72,839.16/100,546.26 = 56,928.74/x
  3. Step 3: Cross multiply
    72,839.16x = 100,546.26 × 56,928.74
  4. Step 4: Simplify right side
    72,839.16x = 5,723,971,893.51
  5. Step 5: Solve for x
    x = 5,723,971,893.51/72,839.16
  6. Step 6: Final answer
    x = 78,583.72

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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.