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Finding the Fourth Proportional to 76,435.60, 114,426.60 and 56,801.20

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Solution

The fourth proportional to 76,435.60, 114,426.60 and 56,801.20 is: 85,033.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,435.60 : 114,426.60 = 56,801.20 : x
  2. Step 2: Convert to fraction form
    76,435.60/114,426.60 = 56,801.20/x
  3. Step 3: Cross multiply
    76,435.60x = 114,426.60 × 56,801.20
  4. Step 4: Simplify right side
    76,435.60x = 6,499,568,191.92
  5. Step 5: Solve for x
    x = 6,499,568,191.92/76,435.60
  6. Step 6: Final answer
    x = 85,033.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.