Home / 79,411.73-109,515.05-53,956.20

Finding the Fourth Proportional to 79,411.73, 109,515.05 and 53,956.20

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Solution

The fourth proportional to 79,411.73, 109,515.05 and 53,956.20 is: 74,409.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,411.73 : 109,515.05 = 53,956.20 : x
  2. Step 2: Convert to fraction form
    79,411.73/109,515.05 = 53,956.20/x
  3. Step 3: Cross multiply
    79,411.73x = 109,515.05 × 53,956.20
  4. Step 4: Simplify right side
    79,411.73x = 5,909,015,671.03
  5. Step 5: Solve for x
    x = 5,909,015,671.03/79,411.73
  6. Step 6: Final answer
    x = 74,409.86

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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.